id stringlengths 4 10 | question stringlengths 18 1.2k | answer stringlengths 1 179 | answer_aliases listlengths 0 358 | documents listlengths 1 1.63k |
|---|---|---|---|---|
tc_2925 | Which of the retina's cells can distinguish between different wavelengths of light? | Cone cells | [
"cone retina",
"cones eyes",
"colour receptors",
"color receptors",
"cones eye",
"cone vision",
"retinal cones",
"cone photoreceptor",
"cone cells",
"cones retina",
"cone cell",
"cone eye",
"retinal cone",
"retina cone cell"
] | [
"Retina\n\nThe retina ( , , pl. retinae,; from Latin rēte, meaning \"net\") is the third and inner coat of the eye which is a light-sensitive layer of tissue. The optics of the eye create an image of the visual world on the retina (through the cornea and lens), which serves much the same function as the film in a ... |
tc_2927 | Which hormone causes male sexual development? | Testosterone | [
"malestrone",
"testosterone capropate",
"neo testis",
"testim",
"testosterone congeners",
"testoderm",
"relibra",
"atc code g03ba03",
"testosterone propionate",
"t cypionate",
"virilon im",
"virormone",
"perandren",
"sustason 250",
"testogel",
"android 25",
"testrone",
"teslen",
... | [
"Hormone\n\nA hormone (from the Greek participle “”) is any member of a class of signaling molecules produced by glands in multicellular organisms that are transported by the circulatory system to target distant organs to regulate physiology and behaviour. Hormones have diverse chemical structures, mainly of 3 cla... |
tc_2928 | Which part of the brain controls the heart rate? | Medulla oblongata | [
"medula oblongata",
"vital knot",
"bulbar",
"oblongata",
"closed medulla",
"bulbar reflexes",
"open medulla",
"cardiac center",
"medulla oblongada",
"medulla oblongata",
"bulbar reflex",
"medula oblongada"
] | [
"Brain\n\nThe brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. Only a few invertebrates such as sponges, jellyfish, adult sea squirts and starfish do not have a brain; diffuse or localised nerve nets are present instead. The brain is located in the h... |
tc_2931 | What is an overgrowth of fibrous tissue, usually produced at the site of a scar? | Keloid | [
"raised scar",
"keloidal",
"keloid scar",
"keloidal scar",
"keloid",
"radiation induced keloids",
"radiation induced keloid",
"acne keloid",
"keloid scars",
"keloids"
] | [
"Scar\n\nScars are areas of fibrous tissue (fibrosis) that replace normal skin after injury. A scar results from the biological process of wound repair in the skin and other tissues of the body. Thus, scarring is a natural part of the healing process. With the exception of very minor lesions, every wound (e.g., aft... |
tc_2932 | Which is the only vein in the body to carry oxygenated blood? | Pulmonary vein | [
"superior pulmonary",
"right inferior pulmonary vein",
"left inferior pulmonary vein",
"superior pulmonary vein",
"inferior pulmonary",
"pulmonary veins",
"venæ pulmonales",
"right pulmonary vein",
"right superior pulmonary vein",
"pulmonary vein",
"venae pulmonales",
"left superior pulmonary ... | [
"Vein\n\nVeins are blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart.",
"Vein\n... |
tc_2933 | Which human body organ weighs about 2 kilos? | Liver | [
"hepatic production",
"liver metabolism",
"impressio duodenalis",
"impressio renalis hepatis",
"impressio gastrica",
"hepatic metabolism",
"suprarenal impression",
"hepatic",
"impressio colica",
"impressio duodenalis hepatis",
"colic impression",
"lobus hepatis",
"iecur",
"impressio suprar... | [
"Organ (anatomy)\n\nIn biology, an organ or viscus is a collection of tissues joined in a structural unit to serve a common function. In anatomy, a viscus is an internal organ, and viscera is the plural form.",
"Organ (anatomy)\n\nOrgans are composed of main tissue, parenchyma, and \"sporadic\" tissues, stroma. ... |
tc_2935 | Which name is given to the heart chamber which receives blood? | Atrium | [
"atrium disambiguation",
"atrium"
] | [
"Heart\n\nThe heart is a muscular organ in humans and other animals, which pumps blood through the blood vessels of the circulatory system. Blood provides the body with oxygen and nutrients, and also assists in the removal of metabolic wastes. The heart is located in the middle compartment of the mediastinum in th... |
tc_2937 | What kind of joint is the hip? | Ball-and-socket | [
"ball and socket joints",
"enarthrosis",
"spheroidal joint",
"ball and socket joint",
"ball and socket",
"articulatio cotylica",
"articulatio spheroidea"
] | [
"Joint\n\nA joint or articulation (or articular surface) is the connection made between bones in the body. They are constructed to allow for different degrees and types of movement. Sutures between the bones of the skull permit very little movement. The connection between a tooth and the jawbone is also called a j... |
tc_2939 | Where is the sinoatrial node? | Heart | [
"human heart",
"sternocostal surface of heart",
"heart chambers",
"facies diaphragmatica cordis",
"heart biology",
"base of heart",
"atlas of human cardiac anatomy",
"heart",
"heart food",
"sternocostal surface",
"right side of heart",
"left side of heart",
"facies sternocostalis cordis",
... | [
"Sinoatrial node\n\nThe sinoatrial node (often abbreviated SA node; also commonly called the sinus node and less commonly the sinuatrial node) is the normal natural pacemaker of the heart and is responsible for the initiation of the cardiac cycle (heartbeat). It spontaneously generates an electrical impulse, which ... |
tc_2940 | What is the substance that the body over-produces in an allergic reaction to pollen? | Histamine | [
"histamine phosphate",
"atc code v04cg03",
"histamine agents",
"histamine",
"atc code l03ax14",
"atcvet code qv04cg03",
"atcvet code ql03ax14",
"h substance inflammation",
"histamin",
"histemine",
"histamines"
] | [
"Allergy\n\nAllergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to something in the environment that usually causes little or no problem in most people. These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphy... |
tc_2942 | Which organ of the body secretes insulin? | Pancreas | [
"pancreatic",
"exocrine pancreas",
"omental eminence of pancreas",
"inferior surfaces of pancreas",
"omental tuber",
"dorsal anlage",
"pancreas disorders",
"anterior margin of pancreas",
"surface of pancreas",
"pancrea",
"pancreas development",
"receptors pancreatic hormone",
"superior margi... | [
"Organ (anatomy)\n\nIn biology, an organ or viscus is a collection of tissues joined in a structural unit to serve a common function. In anatomy, a viscus is an internal organ, and viscera is the plural form.",
"Organ (anatomy)\n\nOrgans are composed of main tissue, parenchyma, and \"sporadic\" tissues, stroma. ... |
tc_2944 | Which part of the gut absorbs water from thje food? | Colon | [
"colon",
"colones",
"colons",
"colon disambiguation"
] | [
"Absorption of Water and Electrolytes\n\nAbsorption of Water and Electrolytes\nGlossary\nAbsorption of Water and Electrolytes\nThe small intestine must absorb massive quantities of water. A normal person or animal of similar size takes in roughly 1 to 2 liters of dietary fluid every day. On top of that, another 6 t... |
tc_2945 | Where would you find the islets of Langerhans? | Pancreas | [
"pancreatic",
"exocrine pancreas",
"omental eminence of pancreas",
"inferior surfaces of pancreas",
"omental tuber",
"dorsal anlage",
"pancreas disorders",
"anterior margin of pancreas",
"surface of pancreas",
"pancrea",
"pancreas development",
"receptors pancreatic hormone",
"superior margi... | [
"Pancreatic islets\n\nThe pancreatic islets or islets of Langerhans are the regions of the pancreas that contain its endocrine (i.e., hormone-producing) cells, discovered in 1869 by German pathological anatomist Paul Langerhans. New studies show that the pancreatic islets constitute approximately 4.5% of the pancr... |
tc_2946 | What is the colored muscle that responds involuntarily to light? | Iris | [
"iris",
"iris band",
"iris song",
"iris disambiguation",
"iris genus"
] | [
"Pupil: Light, Perception & Life Science Activity ...\n\nPupil: Light, Perception & Life Science Activity | Exploratorium Teacher Institute Project\nNone needed. To Do and Notice\nPlace the magnifying glass on the surface of the mirror. Look into the center of the magnifying glass with one eye. If you wear contact ... |
tc_2947 | What is the name of the enzyme produced in the mouth? | Salivary amylase | [
"ec 3 2 1 1",
"α amylase",
"alpha amylase",
"ptyalin",
"salivary amylase"
] | [
"Names of the Enzymes in the Mouth & Esophagus - Synonym\n\nNames of the Enzymes in the Mouth & Esophagus | The Classroom | Synonym\nNames of the Enzymes in the Mouth & Esophagus\nby Andrea Becker\nThe enzymes in your saliva start the digestion process when you put food in your mouth. Related Articles\nHow Does Tem... |
tc_2949 | The pituitary controls many hormones, but what controls the pituitary? | Hypothalamus | [
"anterior hypothalamus",
"hypothallamus",
"hypothalamic",
"control of food intake by hypothalamus",
"hypothalamic diseases",
"hypothalamic structure",
"tuberal region of hypothalamus",
"hypothalamic nucleus",
"tuberal nuclei",
"hypothalmus",
"hypothalamic nuclei",
"hypothalamic hormone",
"hy... | [
"Pituitary gland\n\nIn vertebrate anatomy, the pituitary gland, or hypophysis, is an endocrine gland about the size of a pea and weighing in humans. It is a protrusion off the bottom of the hypothalamus at the base of the brain. The hypophysis rests upon the hypophysial fossa of the sphenoid bone in the center of ... |
tc_2950 | What is the pigment that colors skin? | Melanin | [
"black melanin",
"pheomelanin",
"catechol melanins",
"eumelanin",
"eumelanic",
"melanins",
"melanin synthesis",
"brown eumelanin",
"phaeomelanin",
"phaeomelanic",
"melanization",
"melanin",
"plant melanin",
"catechol melanin"
] | [
"Pigment\n\nA pigment is a material that changes the color of reflected or transmitted light as the result of wavelength-selective absorption. This physical process differs from fluorescence, phosphorescence, and other forms of luminescence, in which a material emits light.",
"Pigment\n\nMany materials selectivel... |
tc_2951 | Which tissue secretes progesterone during the second half of the menstrual cycle? | Corpus luteum | [
"theca lutein cell",
"corpora lutea",
"corpora luteum",
"corpus luteum",
"corpus lutea",
"lutein cyst",
"corpus luetum",
"luteal cells",
"corpora albicantia",
"corpus luteum graviditatis",
"corpus albicantia",
"yellow bodies",
"corpus luteum hormones",
"corpus leteum",
"granulosa lutein ... | [
"Progesterone\n\nProgesterone (abbreviated as P4), also known as pregn-4-ene-3,20-dione, is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. It belongs to a group of steroid hormones called the progestogens, and is the ma... |
tc_2952 | Which gland secretes the corticosteroids? | Adrenal | [
"suprarenals",
"adrenal glands",
"adrenal function",
"glandula suprarenalis",
"adrenal gland",
"adrenomedullary",
"glandulae suprarenalis",
"glandulae adrenalis",
"suprarenal glands",
"suprarenal bodies",
"adrenals",
"epinephric gland",
"glandula adrenalis",
"suprarenal gland",
"adrenal"... | [
"Gland\n\nA gland is an organ in an animal's body that synthesizes substances (such as hormones) for release into the bloodstream (endocrine gland) or into cavities inside the body or its outer surface (exocrine gland).",
"Gland\n\nStructure",
"Gland\n\nDevelopment",
"Gland\n\nEvery gland is formed by an ingr... |
tc_2953 | What are the natural pain-killing substances produced in the brain and pituitary gland? | Endorphins | [
"endorfin",
"endorphines",
"endorphine",
"endorphin rush",
"endorphens",
"endorphins",
"runners high",
"endorphin"
] | [
"Pituitary gland\n\nIn vertebrate anatomy, the pituitary gland, or hypophysis, is an endocrine gland about the size of a pea and weighing in humans. It is a protrusion off the bottom of the hypothalamus at the base of the brain. The hypophysis rests upon the hypophysial fossa of the sphenoid bone in the center of ... |
tc_2958 | What hormone was discovered by John Jacob Abel? | Adrenaline | [
"asmatane mist",
"supranephrane",
"hektalin",
"epinephrine reversal",
"adrenapax",
"renaglandin",
"stryptirenal",
"levorenin",
"renoform",
"epi ez pen jr",
"medihaler epi",
"4 5 beta hydroxyphenethylamine",
"renagladin",
"adrenutol",
"vasoton",
"tolax",
"atc code c01ca24",
"hemosta... | [
"Hormone\n\nA hormone (from the Greek participle “”) is any member of a class of signaling molecules produced by glands in multicellular organisms that are transported by the circulatory system to target distant organs to regulate physiology and behaviour. Hormones have diverse chemical structures, mainly of 3 cla... |
tc_2959 | What is the substance produced by hard exercise and oxygen debt, causing stiffness in the muscles? | Lactic acid | [
"α hydroxypropionic acid",
"2 hydroxypropionic acid",
"l lactate",
"lactic acid",
"d lactate",
"s lactate",
"atcvet code qp53ag02",
"acid of milk",
"atc code g01ad01",
"milk acid",
"blood lactate",
"e270",
"e328",
"atcvet code qg01ad01",
"2 hydroxypropanoic acid"
] | [
"Excess post-exercise oxygen consumption\n\nExcess post-exercise oxygen consumption (EPOC, informally called afterburn) is a measurably increased rate of oxygen intake following strenuous activity intended to erase the body's \"oxygen deficit\". In historical context the term \"oxygen debt\" was popularized to exp... |
tc_2960 | Where would you find the carotid arteries? | Neck | [
"neck",
"human neck",
"necke",
"collum anatomy",
"nuchal"
] | [
"An Overview of Carotid Artery Disease - WebMD\n\nAn Overview of Carotid Artery Disease\nSedentary lifestyle\nFamily history of atherosclerosis, either coronary artery disease or carotid artery disease\nMen younger than age 75 have a greater risk than women in the same age group. Women have a greater risk than men ... |
tc_2962 | Which protein forms hair and nails? | Keratin | [
"keratins",
"cornification",
"keratin",
"hornification",
"cornified",
"neurokeratin",
"keratinisation",
"keratinized",
"kerotin",
"keretin",
"keratinopathy",
"keratinization",
"keratine",
"kereton",
"keratinous tissue",
"ceratin",
"keratin wax",
"keratinous"
] | [
"Protein\n\nProteins ( or) are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, responding to stimuli, and transporting molecules from one locat... |
tc_2963 | Which gas released by car exhausts, stops the blood hemoglobin from working correctly? | Carbon Monoxide | [
"koch–haaf reaction",
"koch haaf reaction",
"carbon monixide",
"carbon mono oxide",
"carbonic oxide",
"carbon monoxide"
] | [
"Hemoglobin\n\nHemoglobin ( ); also spelled haemoglobin and abbreviated Hb or Hgb, is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates (with the exception of the fish family Channichthyidae ) as well as the tissues of some invertebrates. Hemoglobin in the blood carrie... |
tc_2965 | What device is added to a car's exhaust system to reduce pollution? | Catalytic converter | [
"catcon",
"catalytic converters",
"catalytic combustor",
"catalytic converter",
"cadillac converter",
"catalytic convertor",
"catalysator",
"diesel oxidation catalyst"
] | [
"Exhaust system\n\nAn exhaust system is usually piping used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes. Depending on the overall system design, the exhaust gas may flow thro... |
tc_2966 | Which Australian mammal lays eggs? | Duck-billed platypus | [
"beaver duck",
"duckbilled platypus",
"duck billed playtupus",
"platypuses",
"platamapus",
"ornithorhyncus anatinus",
"platypus",
"ornithorhyncus",
"platipus",
"duck fox",
"marsupial duckbill",
"platypodes",
"duck mole",
"ornithorhyncus paradoxus",
"mallangong",
"duckbill platypus",
... | [
"Mammal\n\nMammals (class Mammalia from Latin mamma \"breast\") are a clade of endothermic amniotes distinguished from reptiles and birds by the possession of a neocortex (a region of the brain), hair, three middle ear bones and mammary glands.",
"Mammal\n\nMammals include the largest animals on the planet, the g... |
tc_2967 | What is the term for something that will break down naturally? | Biodegradable | [
"biodegrade",
"biodegradation",
"biodegradable",
"non biodegradable",
"biotic decomposition",
"biodegradeable",
"compostable",
"biological degradation",
"biodegradable products",
"biodegradable material",
"biodegradability"
] | [
"Biodegradable Definition - GreenGood\n\nTerms to Know\nBiodegradable Definition\nA “biodegradable” product has the ability to break down, safely and relatively quickly, by biological means, into the raw materials of nature and disappear into the environment. These products can be solids biodegrading into t... |
tc_2968 | Which is the most common gas in the atmosphere? | Nitrogen | [
"n₂",
"dinitrogen",
"s2 2s2 2p3",
"nitrogens",
"mephitic air",
"noxious air",
"phlogisticated air",
"industrial nitrogen",
"nitrogen gases",
"molecular nitrogen",
"mephitic",
"nitrogen gas",
"n≡n",
"nitrogen compounds",
"burnt air",
"azotic air",
"nitrum",
"nitrogen atom",
"nitro... | [
"Gas\n\nGas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide)... |
tc_2969 | Which fuel is formed by the fossilization of plants? | Coal | [
"dssn",
"low sulfur coal",
"pitcoal",
"coal pulverization",
"fuel industry",
"coal industry",
"coking coal",
"coal",
"steam coal",
"coal fired",
"liquid coal",
"pit coal",
"coalization",
"types of coal",
"thermal coal",
"coal bed",
"coal business",
"coal reserves",
"utah state ro... | [
"Fossil\n\nFossils (from Classical Latin fossilis; literally, \"obtained by digging\") are the preserved remains or traces of animals, plants, and other organisms from the remote past. The totality of fossils, both discovered and undiscovered, and their placement in fossiliferous (fossil-containing) rock formation... |
tc_2970 | Oxygen forms approximately what proportion of the atmosphere? | 20% | [
"20",
"twenty"
] | [
"Oxygen\n\nOxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table and is a highly reactive nonmetal and oxidizing agent that readily forms oxides with most elements as well as other compounds. By mass, oxygen is the third-most abundant element in... |
tc_2971 | What kind of tide appears at full Moon? | Spring tide | [
"tidal flow",
"astronomical tide",
"neap tides",
"low tide",
"compound tides",
"flood tide",
"flooding tide",
"lake tide",
"tied",
"spring tide",
"neap tide",
"ebbing tide",
"compound tide",
"neaps",
"tidal movement",
"semidiurnal tides",
"tide lands",
"ocean tides",
"tidal cycle... | [
"Tide\n\nTides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth.",
"Tide\n\nThe times and amplitude of tides at a locale are influenced by the alignment of the Sun and Moon, by the pattern of tides in the d... |
tc_2972 | What is the term given to the study of the weather? | Meteorology | [
"metereology",
"meteorologist",
"slight risk of severe thunderstorms",
"meteorologists",
"hurricane specialist",
"weather research",
"history of meteorology",
"meteorology books",
"metereologia",
"meterology",
"meteorological",
"nuclear meteorology",
"atmospheric dynamics",
"weatherologist... | [
"Weather\n\nWeather is the state of the atmosphere, to the degree that it is hot or cold, wet or dry, calm or stormy, clear or cloudy. Most weather phenomena occur in the troposphere, just below the stratosphere. Weather refers to day-to-day temperature and precipitation activity, whereas climate is the term fo... |
tc_2974 | What is the name given to the outermost layer of the Earth? | Crust | [
"crustal",
"crust formation",
"crust disambiguation",
"cruſt",
"crust"
] | [
"Structure of the Earth\n\nThe interior structure of the Earth is layered in spherical shells, like an onion. These layers can be defined by their chemical and their rheological properties. Earth has an outer silicate solid crust, a highly viscous mantle, a liquid outer core that is much less viscous than the mant... |
tc_2975 | Which country produces the world's largest quantity of municipal waste per person per year? | USA | [
"u s of america",
"u–s–",
"estatos unitos",
"amarica",
"america united states of",
"v s amerika",
"states of america",
"amurika",
"unitesd states",
"estados unidos de america",
"america",
"united states of america oldpage",
"america us",
"nited states",
"etats unis d amerique",
"united... | [
"Municipal solid waste\n\nMunicipal solid waste (MSW), commonly known as trash or garbage in the United States and as refuse or rubbish in Britain, is a waste type consisting of everyday items that are discarded by the public. \"Garbage\" can also refer specifically to food waste, as in a garbage disposal; the two ... |
tc_2977 | Which sea is so highly polluted that the Barcelona Convention was set up in 976 to try and clean it up? | Mediterranean Sea | [
"sea of mediterranea",
"mediterranian sea",
"roman sea",
"mediteranean",
"mediterranean sea",
"medditeranean",
"miditerranean",
"mediterranean coast",
"mediterranean ocean",
"mediteranian",
"meditiranean",
"البحر المتوسط",
"mediterranium sea",
"mediterain",
"mediteranean sea",
"med",
... | [
"Barcelona Convention\n\nThe Convention for Protection of the Mediterranean Sea against Pollution (Barcelona Convention), also known as the Barcelona Convention for the Protection of the Mediterranean or simply the Barcelona Convention, is a regional convention adopted in 1976 to prevent and abate pollution from ... |
tc_2980 | What is the scientific scale for measuring the hardness of rocks? | Mohs' scale | [
"mohs scale",
"hardness scale",
"mohs scale of mineral hardness",
"mohs s scale of mineral hardness",
"mohs scale of hardness",
"mineral hardness",
"test for hardness of minerals",
"moh s scale of hardness",
"moh s scale",
"moh s scale of mineral hardness",
"moh scale",
"mohs hardness",
"moh... | [
"Hardness\n\nHardness is a measure of how resistant solid matter is to various kinds of permanent shape change when a compressive force is applied. Some materials (e.g. metals) are harder than others (e.g. plastics). Macroscopic hardness is generally characterized by strong intermolecular bonds, but the behavior of... |
tc_2981 | What is the world's smallest continent? | Australia | [
"australie",
"orstraya",
"federal australia",
"australias",
"empire of australia",
"modern australia",
"asutralia",
"iso 3166 1 au",
"australien",
"australia country",
"australia federation",
"austraila",
"country life in australia",
"philosophy in australia",
"australlia",
"continenta... | [
"Continent\n\nA continent is one of several very large landmasses on Earth. Generally identified by convention rather than any strict criteria, up to seven regions are commonly regarded as continents. Ordered from largest in size to smallest, they are: Asia, Africa, North America, South America, Antarctica, Europe,... |
tc_2982 | Which gas forms approximately 1% of the atmosphere? | Argon | [
"argon",
"element 18",
"argon hydride",
"e938",
"7440 37 1",
"argon gas"
] | [
"Gas\n\nGas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide)... |
tc_2983 | What is the term for the energy obtained from hot, underground rocks? | Geothermal | [
"geothermal geology",
"geothermy",
"geotherm",
"geothermal gradient",
"geothermic gradient",
"geothermal",
"thermogeology",
"geothermal gradients"
] | [
"Energy\n\nIn physics, energy is a property of objects which can be transferred to other objects or converted into different forms. The \"ability of a system to perform work\" is a common description, but it is misleading because energy is not necessarily available to do work. For instance, in SI units, energy i... |
tc_2984 | What name is given to the rocks swallowed by dinosaurs to assist their digestion? | Gastroliths | [
"gastrolith",
"gizzard stone",
"stomach stone",
"gizzard stones",
"gastroliths"
] | [
"Dinosaurs 118 Final - Science 118 with Oliver at Worcester ...\n\nDinosaurs 118 Final - Science 118 with Oliver at Worcester State College - StudyBlue\nWho was the last Ptolemaic Pharaoh? Cleopatra\nWhich of the Greek elements was the lightest? Fire\nThe fall of what city was the ultimate (albeit distant) justific... |
tc_2985 | Which animal has been hunted almost to extinction because of its horn? | Rhinoceros | [
"rhinoceros horn trade and use",
"rhinoserous",
"rhinos",
"rhinocerotoidea",
"rhinoceros",
"rhinocerotidae",
"horns of rhinoceroses",
"rhinocerotinae",
"rhinocerotina",
"horn of rhinoceros",
"elasmotheriine",
"rhinocerous",
"elasmotheriinae",
"rhinocerotine",
"rhinoceroses",
"rhinoceri... | [
"Horn (anatomy)\n\nA horn is a pointed projection on the head of various animals consisting of a covering of keratin and other proteins surrounding a core of live bone. In mammals, true horns are found mainly among the ruminant artiodactyls, in the families Antilocapridae (pronghorn) and Bovidae (cattle, goats, an... |
tc_2986 | Which chemical, commonly used to increase crop yield, sometimes contaminates drinking water? | Nitrate | [
"nitrate poisoning",
"nitrate ion",
"no3",
"nitrates",
"trinitrate",
"nitrate v",
"nitrate",
"nitrate deposits",
"alkyl nitrate",
"alkyl nitrates",
"nitroxylation",
"no3−"
] | [
"Drinking water\n\nDrinking water, also known as potable water or improved drinking water, is water safe enough for drinking and food preparation. Globally, in 2012, 89% of people had access to water suitable for drinking. Nearly 4 billion had access to tap water while another 2.3 billion had access to wells or pub... |
tc_2988 | When you recycle a drink can, which metal is it you are recovering? | Aluminum | [
"super purity aluminium",
"alliminuim",
"aluminum compounds",
"billeted aluminum",
"super purity aluminum",
"aluminium element",
"aluminium production",
"aluminium metal",
"billet aluminium",
"al element",
"alumine",
"alumnium",
"alumino",
"e173",
"aluminium ii",
"alluminum",
"alumin... | [
"Recycling\n\nRecycling is the process of converting waste materials into reusable objects to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials, energy usage, air pollution (from incineration) and water pollution (from landfilling) by decreasing the need for \"conventiona... |
tc_2990 | What is the name of the liquid rock which pours from a volcano? | Lava | [
"types of lava",
"pahoehoe",
"60a",
"ʻaʻā",
"aa lava",
"sa sa",
"60a 60a",
"lava flows",
"lava",
"aa lava flow",
"lava fountain",
"ʻaʻa",
"lava blocks",
"block lava",
"lavas",
"ā",
"aʻa",
"pāhoehoe",
"lava flow"
] | [
"Rock (geology)\n\nIn geology, rock or stone is a naturally occurring solid aggregate of one or more minerals or mineraloids. For example, the common rock granite is a combination of the quartz, feldspar and biotite minerals. The Earth's outer solid layer, the lithosphere, is made of rock.",
"Rock (geology)\n\nRo... |
tc_2991 | What is the term applied to the process of gathering together weather forecasts from various recording stations? | Synoptic forecasting | [
"synoptic forecasting"
] | [
"Weather Forecasting facts, information, pictures ...\n\nWeather Forecasting facts, information, pictures | Encyclopedia.com articles about Weather Forecasting\nCOPYRIGHT 2003 The Gale Group, Inc. Weather forecasting\nWeather forecasting is the attempt by meteorologists to predict the state of the atmosphere at som... |
tc_2992 | What kind of natural phenomenon 'meanders'? | A river | [
"river tv series",
"river album",
"river",
"river disambiguation",
"river film",
"river tv",
"river song"
] | [
"15 weird natural phenomena [PICS] - Matador Network\n\n15 weird natural phenomena [PICS] - Matador Network\n15 weird natural phenomena [PICS]\nby Sarah Park\nAugust 27, 2010\nSarah Park brings us some of the most dangerous, beautiful, and downright weird wonders of the natural world. 1\nBioluminescent red tide\nWh... |
tc_2994 | What is the collective name for rain hail, snow, and sleet? | Precipitation | [
"precipitation meteorology",
"atmospheric hydrometeor",
"orogaphic precipitation",
"precipitaion",
"precipitation measurement",
"cumulonimbus praecipitatio",
"classification of clouds",
"precipitation",
"precipitaiton",
"atmospheric precipitation",
"hydrometeor",
"praecipitation",
"annual pr... | [
"Rain\n\nRain is liquid water in the form of droplets that have condensed from atmospheric water vapor and then precipitated—that is, become heavy enough to fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the Earth. It provides suitable c... |
tc_2995 | What is the hardest natural substance known? | Diamond | [
"4 c s of diamonds",
"polished diamond",
"4 c s of diamond grading",
"industrial diamonds",
"type ii diamond",
"mitre crozier applique",
"diamond powder",
"diamonds",
"industrial diamond",
"diamond",
"diamond industry",
"daimonds",
"bortz",
"natural diamond",
"mitre crozier appliqué",
... | [
"Hardness\n\nHardness is a measure of how resistant solid matter is to various kinds of permanent shape change when a compressive force is applied. Some materials (e.g. metals) are harder than others (e.g. plastics). Macroscopic hardness is generally characterized by strong intermolecular bonds, but the behavior of... |
tc_2997 | What is the collective noun for crows? | Murder | [
"wilful murder",
"murked",
"third degree murder",
"moiders",
"murderess",
"murdur",
"axe murderer",
"moidering",
"3rd degree murder",
"moidered",
"murder",
"special circumstances criminal law",
"murther",
"murdering",
"murders",
"murderers",
"murdered",
"second degree murder",
"m... | [
"Corvus\n\nCorvus is a widely distributed genus of medium-sized to large birds in the family Corvidae. The genus includes species commonly known as crows, ravens, rooks and jackdaws; there is no consistent distinction between \"crows\" and \"ravens\", and these appellations have been assigned to different species c... |
tc_3000 | What is the maximum speed of a garden snail: 0.03 mph, 0.3 mph, or 3 mph? | 0.03 mph | [
"zero point zero three speed",
"0 03 speed",
"0 03 mph"
] | [
"Speed of a Snail - Hypertextbook\n\nSpeed of a Snail - The Physics Factbook\nSpeed of a Snail\nThe World Almanac and Book of Facts 1999. New Jersey: Primedia, 1998: 572. \"Garden snail, 0.03 mph\"\n0.013 m/s\nBranson, Branley Allan. World & I. 11, 5 (May 1996): 166. \"A large banana slug has been observed to cover... |
tc_3002 | What common mineral is formed by the fossilization of vegetation? | Coal | [
"dssn",
"low sulfur coal",
"pitcoal",
"coal pulverization",
"fuel industry",
"coal industry",
"coking coal",
"coal",
"steam coal",
"coal fired",
"liquid coal",
"pit coal",
"coalization",
"types of coal",
"thermal coal",
"coal bed",
"coal business",
"coal reserves",
"utah state ro... | [
"Mineral\n\nA mineral is a naturally occurring chemical compound. Most often, they are crystalline and abiogenic in origin. A mineral is different from a rock, which can be an aggregate of minerals or non-minerals and does not have a specific chemical composition. The exact definition of a mineral is under debate,... |
tc_3004 | In which part of the atmosphere is the ozone layer? | Stratosphere | [
"stratospheric",
"stratosphere",
"upper stratosphere"
] | [
"Atmosphere\n\nAn atmosphere ( ) is a layer of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if its gravity is high and the atmosphere's temperature is low.",
"Atmosphere\n\nThe atmosphere of Earth is mostly compo... |
tc_3006 | Which Indian state is at the eastern end of the Himalayas? | Assam | [
"asom",
"assam",
"assam state",
"in as",
"assom",
"assam india",
"অসম",
"ôxôm"
] | [
"Himalayas\n\nThe Himalayas, or Himalaya, ( or) are a mountain range in Asia separating the plains of the Indian subcontinent from the Tibetan Plateau.",
"Himalayas\n\nThe Himalayan range is home to the planet's highest peaks, including the highest, Mount Everest. The Himalayas include over a hundred mountains e... |
tc_3007 | What is the name of the atmospheric gas which screens out the sun's harmful ultraviolet radiation? | Ozone | [
"electricity smell",
"o₃",
"ozonizer",
"smell of electricity",
"electric smell",
"ozone in water",
"ozone generator",
"ozonation",
"triatomic oxygen",
"ozoneator",
"ozone chemical",
"trioxygen",
"oxygen 3",
"ozone",
"activated oxygen",
"ozonator"
] | [
"Atmosphere of Earth\n\nThe atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reduci... |
tc_3008 | What is the world's deepest ocean? | Pacific | [
"eastern pacific ocean",
"oceanum pacificum",
"north pacific",
"pacific basin",
"mid pacific",
"west pacific",
"eastern pacific",
"southern pacific ocean",
"tepre pacificum",
"pacific oceans",
"mar del sur",
"peaceful sea",
"east pacific",
"sea of magellan",
"pacific region",
"pacific ... | [
"Earth\n\nEarth (otherwise known as the world, in Gaia, or in Latin: Terra ) is the third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System's four terrestrial planets, and the only astronomical object known to harbor life.",
"Earth\n\nAccording to radiometric dating and... |
tc_3009 | Which is the largest animal ever to have inhabited the Earth? | Blue Whale | [
"blue wale",
"blue whale",
"blue whale conservation",
"great blue whale",
"sulphur bottom whale",
"sibbaldus musculus",
"balaenoptera musculus musculus",
"baleanoptera musculus",
"balaenoptera musculus intermedia",
"bluewhale",
"balaenoptera musculus",
"blue whales",
"sibbald s rorqual"
] | [
"What is the biggest animal ever to exist on Earth ...\n\nWhat is the biggest animal ever to exist on Earth? | HowStuffWorks\nWhat is the biggest animal ever to exist on Earth? Sebastien Burel/ Dreamstime.com\nBy considerable measure, the largest known animal on Earth is the blue whale . Mature blue whales can meas... |
tc_3010 | What once covered 14% of the Earth's land area, but by 1991 over half had been destroyed? | Rainforest | [
"strata of tropical rainforest",
"rainforest canopys",
"subtropical rainforests",
"tropcial rainforests",
"rainforest layers",
"vine thicket",
"layers of rainforest",
"brazils rainforest",
"rain forest",
"rain forests",
"rainforests of world",
"subtropical rainforest",
"rainforest destructio... | [
"DEFORESTATION - ThinkGlobalGreen\n\ndeforestation\nCONTACT US\nDEFORESTATION\nRainforests once covered 14% of the earth's land surface; now they cover a mere 6% and experts estimate that the last remaining rainforests could be consumed in less than 40 years. \nDeforestation accounts for about 20% of global emiss... |
tc_3011 | Which inland sea between Kazakhstan and Uzbekistan is fast disappearing because the rivers that feed it have been diverted and dammed? | Aral Sea | [
"bahri aral",
"aral sea",
"shrinking aral sea",
"aral skoye morye",
"voz island",
"sea of aral",
"aral teñizi",
"daryâ ye khârazm",
"lake aral",
"khwarezm lake"
] | [
"Kazakhstan\n\nKazakhstan (; ), officially the Republic of Kazakhstan, is a country in northern Central Asia. Kazakhstan is the world's largest landlocked country, and the ninth largest in the world, with an area of . Kazakhstan is the dominant nation of Central Asia economically, generating 60% of the region's ... |
tc_3012 | The damaged Chernobyl nuclear power station is situated in which country? | Ukraine | [
"ukraien",
"ukraina",
"ukrania",
"ukraine during world war ii",
"ucraine",
"ykpaiha",
"ukrainia",
"ukra jina",
"kiev compromise",
"ukriane",
"ukraˈjina",
"ukraïne",
"україна",
"украина",
"ukrajina",
"ukrayina",
"iso 3166 1 ua",
"ukrane",
"ukraine",
"ukrainian territory",
"uka... | [
"Chernobyl Nuclear Power Plant\n\nThe Chernobyl Nuclear Power Plant or Chernobyl Nuclear Power Station (, ) is a nuclear power station under decommissioning near the city of Pripyat, Ukraine, northwest of the city of Chornobyl, 16 km from the Belarus–Ukraine border, and about 110 km north of Kiev. Reactor No. 4 wa... |
tc_3013 | What type of rock is granite? | Igneous | [
"acidic rock",
"instrusive rock",
"igneous",
"igneus rock",
"igneous deposition",
"decompression melting",
"magmatic rock",
"igneous rock",
"magmatic rocks",
"igneous rocks"
] | [
"Rock (geology)\n\nIn geology, rock or stone is a naturally occurring solid aggregate of one or more minerals or mineraloids. For example, the common rock granite is a combination of the quartz, feldspar and biotite minerals. The Earth's outer solid layer, the lithosphere, is made of rock.",
"Rock (geology)\n\nRo... |
tc_3014 | What type of rock is basalt? | Igneous | [
"acidic rock",
"instrusive rock",
"igneous",
"igneus rock",
"igneous deposition",
"decompression melting",
"magmatic rock",
"igneous rock",
"magmatic rocks",
"igneous rocks"
] | [
"Basalt\n\nBasalt (pronounced,,, or) is a common extrusive igneous (volcanic) rock formed from the rapid cooling of basaltic lava exposed at or very near the surface of a planet or moon. Flood basalt describes the formation in a series of lava basalt flows.",
"Basalt\n\nDefinition",
"Basalt\n\nBy definition, b... |
tc_3015 | What is the main constituent of natural gas? | Methane | [
"ch₄",
"methyl hydride",
"ch4 disambiguation",
"metane",
"carburetted hydrogen",
"ch4",
"methane",
"liquid methane",
"methane plume",
"carbon tetrahydride",
"hydrogen carbide",
"liquid methane rocket fuel",
"methane gas",
"marsh gas firedamp",
"marsh gas",
"methan"
] | [
"Natural gas\n\nNatural gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium. It is formed when layers of decomposing plant and ... |
tc_3017 | Which of the Earth's atmospheric layers reflects radio waves? | Ionosphere | [
"protonosphere",
"ionospheric",
"d region",
"ionospheric layer",
"electrosphere",
"ionospheric model",
"d layer",
"ionosphere"
] | [
"Earth\n\nEarth (otherwise known as the world, in Gaia, or in Latin: Terra ) is the third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System's four terrestrial planets, and the only astronomical object known to harbor life.",
"Earth\n\nAccording to radiometric dating and... |
tc_3018 | Which gas forms 80% of Earth's atmosphere? | Nitrogen | [
"n₂",
"dinitrogen",
"s2 2s2 2p3",
"nitrogens",
"mephitic air",
"noxious air",
"phlogisticated air",
"industrial nitrogen",
"nitrogen gases",
"molecular nitrogen",
"mephitic",
"nitrogen gas",
"n≡n",
"nitrogen compounds",
"burnt air",
"azotic air",
"nitrum",
"nitrogen atom",
"nitro... | [
"Gas\n\nGas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide)... |
tc_3019 | In which mountain chain would you find Mount Everest? | Himalayas | [
"himalaya mountains",
"trans himalaya",
"himavat mountains",
"himalayan mountain range",
"himalayan mountains",
"himalayan mts",
"himalaya range",
"himālaya",
"imaüs",
"himalayan states",
"himalayas mountains",
"himadri",
"himalayas",
"list of sovereign states and dependent territories in ... | [
"Mount Everest\n\nMount Everest, also known in Nepal as Sagarmāthā and in Tibet as Chomolungma, is Earth's highest mountain. It is located in the Mahalangur mountain range in Nepal and Tibet. Its peak is 8848 m above sea level. The international border between China (Tibet Autonomous Region) and Nepal runs across... |
tc_3020 | What is the collective term for substances such as coal, oil and natural gas, the burning of which produces carbon dioxide? | Fossil fuel | [
"fossil fuel vehicle",
"fossilfuels",
"oil gas",
"fossil fuel depletion",
"non fossil",
"fossi fuels",
"timeline fossil fuels",
"gas and oil",
"environmental effects of fossil fuels",
"fossil electricity",
"fossil fuels",
"hydrocarbon fuel",
"fossil fuel energy",
"fossil source",
"fossil... | [
"Coal\n\nCoal (Old English col; meaning \"mineral of fossilized carbon\" since the thirteenth century) is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorph... |
tc_3021 | What contributes to the greenhouse effect at lower atmospheric levels, but in the upper atmosphere protects life on Earth? | Ozone | [
"electricity smell",
"o₃",
"ozonizer",
"smell of electricity",
"electric smell",
"ozone in water",
"ozone generator",
"ozonation",
"triatomic oxygen",
"ozoneator",
"ozone chemical",
"trioxygen",
"oxygen 3",
"ozone",
"activated oxygen",
"ozonator"
] | [
"Greenhouse effect\n\nThe greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without its atmosphere.",
"Greenhouse effect\n\nIf a planet's atmosphere contains radiatively active gases (i.e., greenhouse gases) the atmosp... |
tc_3022 | What is the name of the process by which substances are washed out of the soil? | Leaching | [
"leaching",
"leaching disambiguation",
"leached",
"acid leaching"
] | [
"1. How soil is destroyed - Food and Agriculture Organization\n\nCh02\nSome countries poison soils\nWhy should the leaders of countries today commit their governments and their people to the hard work and expense of a national programme of soil conservation?\nThe answer is that soil takes many years to create, but ... |
tc_3023 | Who was director of the environmental pressure group Friends of the Earth 1984 - 90? | Jonathon Porritt | [
"jonathon porritt",
"jonathan porritt"
] | [
"Environmentalism\n\nEnvironmentalism or environmental rights is a broad philosophy, ideology, and social movement regarding concerns for environmental protection and improvement of the health of the environment, particularly as the measure for this health seeks to incorporate the concerns of non-human elements. En... |
tc_3024 | Which European country is committed to decommissioning all of its nuclear reactors? | Sweden | [
"ulf bergman",
"swea region",
"swedish origin",
"swedish climate",
"kingdom of sweden",
"sveden",
"suecia",
"swedish realm",
"zweden",
"iso 3166 1 se",
"mainland sweden",
"konungariket sverige",
"schweden",
"sweden",
"sverige",
"swedish sin",
"climate of sweden",
"etymology of swed... | [
"Nuclear Decommissioning: Decommission nuclear facilities ...\n\nNuclear Decommissioning: Decommission nuclear facilities - World Nuclear Association\nDecommissioning Nuclear Facilities\n(Updated November 2016)\nTo date, about 110 commercial power reactors, 46 experimental or prototype reactors, over 250 research r... |
tc_3025 | Which Canadian city gave its name to the 1987world agreement on protection of the ozone layer? | Montreal | [
"montreal quebec",
"weather in montreal",
"montreol",
"montreal qb",
"montreal s",
"montréal",
"funtreal",
"un locode camtr",
"weather in montréal",
"montreal qc",
"montrealer",
"montra c al",
"montréal québec",
"montreal quebec canada",
"montréal s",
"montrela",
"montréal canada",
... | [
"Ozone depletion\n\nOzone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about four percent in the total amount of ozone in Earth's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. Th... |
tc_3027 | The dodo was a native bird of which island? | Mauritius | [
"maurituis",
"indian mauritius",
"crime in mauritius",
"mauritas",
"iso 3166 1 mu",
"health care in mauritius",
"republic of mauritius",
"crown colony of mauritius",
"ile maurice",
"maritius",
"île maurice",
"mauritus",
"law enforcement in mauritius",
"health in mauritius",
"mauritius is... | [
"Dodo\n\nThe dodo (Raphus cucullatus) is an extinct flightless bird that was endemic to the island of Mauritius, east of Madagascar in the Indian Ocean. The species died out before 1700, less than a hundred years after encountering men. The dodo's closest genetic relative was the also extinct Rodrigues solitaire, t... |
tc_3028 | What is the name given to the study of earthquakes? | Seismology | [
"seismology",
"history of seismology",
"seismic",
"seisomologist",
"seismological observatory",
"earthquake seismology",
"seismologists",
"seismologist"
] | [
"Earthquake\n\nAn earthquake (also known as a quake, tremor or temblor) is the perceptible shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's crust that creates seismic waves. Earthquakes can be violent enough to toss people around and destroy whole cities. The seismicit... |
tc_3031 | Marble is formed by the metamorphosis of which rock? | Limestone | [
"lime stone",
"coralline limestone",
"limestone",
"limestone mineral",
"limestones",
"cretaceous limestone",
"shackleton limestone",
"chalkstone"
] | [
"Marble\n\nMarble is a metamorphic rock that may be foliated or non-foliated, composed of recrystallized carbonate minerals, most commonly calcite or dolomite. Geologists use the term \"marble\" to refer to metamorphosed limestone; however, stonemasons use the term more broadly to encompass unmetamorphosed limeston... |
tc_3032 | Which common water pollutant is believed to be harmful to newborn babies? | Nitrate | [
"nitrate poisoning",
"nitrate ion",
"no3",
"nitrates",
"trinitrate",
"nitrate v",
"nitrate",
"nitrate deposits",
"alkyl nitrate",
"alkyl nitrates",
"nitroxylation",
"no3−"
] | [
"Water pollution\n\nWater pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.",
"Water ... |
tc_3034 | What natural feature covers approximately 6% of the Earth's land surface, and harbors 40% of the Earth's species? | Tropical rainforest | [
"amazon biome",
"tropical rainforest",
"lowland equatorial evergreen rain forests",
"tropical rainforests",
"tropical rain forest",
"tropical rain forests",
"equatorial rainforests",
"trpoical rainforest"
] | [
"COMMUNITY AND ECOSYSTEM DYNAMICS\n\nCommunity and Ecosystem Dynamics\nCOMMUNITY AND ECOSYSTEM DYNAMICS\nDefinitions | Back to Top\nA community is the set of all populations that inhabit a certain area. Communities can have different sizes and boundaries. These are often identified with some difficulty. An ecosyste... |
tc_3035 | What name is given to the huge growths of algae sometimes seen in polluted lakes and rivers? | A bloom | [
"bloom song",
"bloom disambiguation",
"blooms",
"blooming disambiguation",
"blooming",
"bloom",
"bloom album"
] | [
"Algae\n\nAlgae (; singular alga) is an informal term for a large, diverse group of photosynthetic organisms which are not necessarily closely related and are thus polyphyletic. Included organisms range from unicellular genera, such as Chlorella and the diatoms, to multicellular forms, such as the giant kelp, a lar... |
tc_3036 | What was the name of the dioxin-containing defoliant used during the Vietnam war by the USA army? | Agent Orange | [
"agents orange",
"agent orange",
"pointman project",
"super orange",
"herbicide orange"
] | [
"Defoliant\n\nA defoliant is any chemical sprayed or dusted on plants to cause its leaves to fall off.",
"Defoliant\n\nHistory",
"Defoliant\n\nA classic example of a highly toxic defoliant is Agent Orange, which the British military used abundantly to defoliate regions of Malaya starting in the early 1950s duri... |
tc_3038 | CITES is an international agreement on which environmental problem? | The trade in endangered species | [
"trade in endangered species"
] | [
"CITES\n\nCITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora, also known as the Washington Convention) is a multilateral treaty to protect endangered plants and animals. It was drafted as a result of a resolution adopted in 1963 at a meeting of members of the International Un... |
tc_3040 | What prevents the earth's atmosphere from floating out into space? | Gravity | [
"vertical circular motion",
"gravitational attraction",
"gravitational pull",
"gravitated",
"physics gravity",
"gravitate",
"formulae of gravity",
"gravitationally",
"theories of gravitation",
"gravity and motion",
"gravitational force",
"acceleration of gravity",
"gravitational theory",
"... | [
"Atmosphere of Earth\n\nThe atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reduci... |
tc_3042 | Which of the emissions from cars are acidic? | Nitrogen oxides | [
"noz",
"fuel nox",
"e918",
"oxides of nitrogen",
"nitrogen oxides",
"nitrogen oxide",
"nitrogen oxide disambiguation"
] | [
"Air pollution\n\nAir pollution is the introduction of particulates, biological molecules, or other harmful materials into Earth's atmosphere, causing diseases, allergies, death to humans, damage to other living organisms such as animals and food crops, or the natural or built environment. Air pollution may come fr... |
tc_3043 | Which quarry in the Italian region of Tuscany is renowned for the quality of its marble? | Carrara | [
"comune di carrara",
"carrara",
"principality of carrara",
"marina di carrara",
"carrara italy",
"avenza"
] | [
"Tuscany\n\nTuscany ( ; ,) is a region in central Italy with an area of about and a population of about 3.8 million inhabitants (2013). The regional capital is Florence (Firenze).",
"Tuscany\n\nTuscany is known for its landscapes, traditions, history, artistic legacy and its influence on high culture. It is rega... |
tc_3044 | What is the name given to the geological time period of 363-290 million years ago during which coal measures were formed? | Carboniferous | [
"carboniferous era",
"coal age",
"carboniferous system",
"carboniferous period",
"carboniferous rock",
"carboniferous plants",
"carboniferous",
"carboniferous climate"
] | [
"Period (geology)\n\nA geologic period is one of several subdivisions of geologic time enabling cross-referencing of rocks and geologic events from place to place.",
"Period (geology)\n\nThese periods form elements of a hierarchy of divisions into which geologists have split the Earth's history.",
"Period (geol... |
tc_3045 | Which is further north, the tropic of cancer or the tropic of Capricorn? | Tropic of Cancer | [
"northern tropic",
"tropic of taurus",
"tropic of gemini",
"tropic of cancer"
] | [
"Tropic of Cancer (novel)\n\nTropic of Cancer is a novel by Henry Miller that has been described as \"notorious for its candid sexuality\" and as responsible for the \"free speech that we now take for granted in literature\". It was first published in 1934 by the Obelisk Press in Paris, France, but this edition wa... |
tc_3046 | What name is given to your angular distance on the Earth's surface relative to the equator? | Latitude | [
"rectifying latitude",
"planetocentric latitude",
"astronomical latitude",
"north latitude",
"length of degree of latitude",
"latittude",
"lattitude",
"planetographic latitude",
"latitudes",
"south latitude",
"isometric latitude",
"geodetic latitude",
"latetude",
"authalic latitude",
"co... | [
"Angle\n\nIn planar geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. \nAngles formed by two rays lie in a plane, but this plane does not have to be a Euclidean plane. Angles are also formed by the intersection of two plane... |
tc_3047 | Which landlocked Asian country is described as the world's 'highest rubbish dump' because of all the refuse left behind by expeditions? | Nepal | [
"nēpāl adhirājya",
"sanghiya loktāntrik ganatantra nepāl",
"chiuri kharka",
"state of nepal",
"peace zone",
"संघीय लोकतान्त्रिक गणतन्त्र नेपाल",
"fdrn",
"nepol",
"नेपाः",
"democratic republic of nepal",
"गणतन्त्र नेपाल",
"nepalese republic",
"नेपाल",
"subdivisions of nepal",
"federal rep... | [
"Asian Americans\n\nAsian Americans are Americans of Asian descent. The term refers to a panethnic group that includes diverse populations who have ancestral origins in East Asia, Southeast Asia, or South Asia, as defined by the U.S. Census Bureau. This includes people who indicate their race(s) on the census as \"... |
tc_3050 | What name is given to the layer of the atmosphere closest to the surface of the Earth? | Troposphere | [
"troposphere",
"epitroposphere",
"tropospherical",
"tropospheric",
"tropospheres",
"trophosphere",
"tropospherics",
"troposhere",
"tropospherically"
] | [
"Atmosphere\n\nAn atmosphere ( ) is a layer of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if its gravity is high and the atmosphere's temperature is low.",
"Atmosphere\n\nThe atmosphere of Earth is mostly compo... |
tc_3051 | What name is given to the Earth's single continent, which existed 250 million years ago? | Pangaea | [
"pangaea",
"pangæa",
"pangia",
"pangaean",
"pangea supercontinent",
"pangaia",
"pangea",
"amexem"
] | [
"Earth\n\nEarth (otherwise known as the world, in Gaia, or in Latin: Terra ) is the third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System's four terrestrial planets, and the only astronomical object known to harbor life.",
"Earth\n\nAccording to radiometric dating and... |
tc_3052 | What component of CFCs causes destruction of ozone? | Chlorine | [
"oxymuriatic acid",
"cl2",
"chlorene",
"chlorine",
"cl element",
"dephlogisticated marine acid",
"dichlorine",
"chlroine",
"muriaticum",
"cl",
"chlorine gas",
"chlorine compounds",
"element 17",
"bertholite",
"e925",
"chlorine manufacturing process",
"chloro",
"making of chlorine",... | [
"Chlorofluorocarbon\n\nA chlorofluorocarbon (CFC) is an organic compound that contains only carbon, chlorine, and fluorine, produced as a volatile derivative of methane, ethane, and propane. They are also commonly known by the DuPont brand name Freon. The most common representative is dichlorodifluoromethane (R-12 ... |
tc_3054 | What does a barometer measure? | Atmospheric pressure | [
"sea level pressure",
"air pressure",
"normal pressure",
"mean sea level pressure",
"atmospheric air pressure",
"atmospheric pressure",
"barometric pressure",
"central pressure",
"standard atmospheric pressure"
] | [
"Barometer\n\nA barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather. Numerous measurements of air pressure are used within surface weather analysis to help find surface troughs, high pressure systems and frontal ... |
tc_3055 | What is the basic chemical composition of malachite? | Copper carbonate | [
"basic copper ii carbonate",
"basic copper carbonate",
"copper carbonate",
"copper ii carbonate",
"cuprous carbonate",
"cuco3",
"copper ll carbonate",
"ccuo3",
"cu2 oh 2co3",
"mineral green",
"cupric carbonate"
] | [
"Malachite\n\nMalachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. This opaque, green banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fractures and spaces, deep underground, where the water table and hydro... |
tc_3056 | What is the term for a fold of the Earth's crust in which the layers of rock dip inwards? | Syncline | [
"synclines",
"synclinorium",
"syncline",
"synforms",
"synform"
] | [
"Fold (geology)\n\nA geological fold occurs when one or a stack of originally flat and planar surfaces, such as sedimentary strata, are bent or curved as a result of permanent deformation. Synsedimentary folds are those due to slumping of sedimentary material before it is lithified. Folds in rocks vary in size from... |
tc_3057 | Which clouds only occur above 10,000 meters? | Cirrus | [
"cirrus disambiguation",
"cirrus building",
"cirrus"
] | [
"Cloud\n\nIn meteorology, the study of weather phenomena in the atmosphere, a cloud is an aerosol comprising a visible mass of minute liquid droplets or frozen crystals, both of which are made of water or various chemicals. The droplets or particles are suspended in the atmosphere above the surface of a planetary ... |
tc_3060 | What kind of a person might study a podzol? | A soil scientist | [
"soil science",
"soil scientist",
"soil sciences"
] | [
"Podzol\n\nIn soil science, podzols (known as spodosols in China and the United States of America and podosols in Australia) are the typical soils of coniferous, or boreal forests. They are also the typical soils of eucalypt forests and heathlands in southern Australia, while in Western Europe podzols develop on he... |
tc_3062 | Which gas in the atmosphere can be turned into fertilizer by some microbes? | Nitrogen | [
"n₂",
"dinitrogen",
"s2 2s2 2p3",
"nitrogens",
"mephitic air",
"noxious air",
"phlogisticated air",
"industrial nitrogen",
"nitrogen gases",
"molecular nitrogen",
"mephitic",
"nitrogen gas",
"n≡n",
"nitrogen compounds",
"burnt air",
"azotic air",
"nitrum",
"nitrogen atom",
"nitro... | [
"Gas\n\nGas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide)... |
tc_3063 | Which layer of the Earth is believed to be formed of molten iron and nickel? | Outer core | [
"outer core of earth",
"liquid core",
"outer core"
] | [
"Structure of the Earth\n\nThe interior structure of the Earth is layered in spherical shells, like an onion. These layers can be defined by their chemical and their rheological properties. Earth has an outer silicate solid crust, a highly viscous mantle, a liquid outer core that is much less viscous than the mant... |
tc_3065 | What is the collective noun for rhinoceri? | Crash | [
"crash tv series",
"crashers",
"crash film",
"crashing",
"crash band disambiguation",
"crashes",
"crash band",
"crash album",
"crash disambiguation",
"crash book",
"crash movie",
"crash",
"crash song",
"crash novel",
"crash moment"
] | [
"Rhinoceros\n\nA rhinoceros (, meaning \"nose horn\"), often abbreviated to rhino, is one of any five extant species of odd-toed ungulates in the family Rhinocerotidae, as well as any of the numerous extinct species. Two of these extant species are native to Africa and three to Southern Asia.",
"Rhinoceros\n\nMem... |
tc_3066 | What type of rock is formed by the rapid cooling of molten lava? | Obsidian | [
"black obsidian",
"obsidean",
"obsidian scalpel",
"merikanite obsidian",
"obsidian rock",
"obsidian",
"dragonglass",
"dragon glass",
"obsidion",
"obsydian"
] | [
"How is obsidian formed? | Reference.com\n\nHow is obsidian formed? | Reference.com\nHow is obsidian formed?\nA:\nQuick Answer\nObsidian is formed by rapidly cooling molten rock or lava. Obsidian is also called volcanic glass, and it is considered a mineraloid.\nFull Answer\nExamples of the rapid cooling that forms... |
tc_3067 | What name is given to the rock formations used as a source of water? | Aquifers | [
"unconfined aquifer",
"sand aquifer",
"aquifers",
"acquifer",
"aquafer",
"aquafier",
"aquifier",
"aquitard",
"groundwater aquifer",
"aquiferous well",
"aquiferous wells",
"aquiclude",
"aquefur",
"unconfined groundwater",
"aquifer",
"aquatard",
"confined aquifer",
"underground aquif... | [
"Water Science Glossary of Terms ( USGS )\n\nUSGS Water Science Glossary of Terms\nA | B | C | D | E | F | G | H | I | K | L | M | N | O | P | R | S | T | U | V | W | X | Y\nA\nacequia--acequias are gravity-driven waterways, similar in concept to a flume. Most are simple ditches with dirt banks, but they can be lin... |
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