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What is the most abundant gas in Earth's atmosphere? Answer with the single word only, in lowercase.

Answer

nitrogen
abundance
Greatest share by volume in the near-surface atmosphere, following NASA's stated comparison.
sources
science.nasa.gov, en.wikipedia.org, nasa / noaa atmospheric composition reference (dry air by volume: n2 ~78.08%, o2 ~20.95%, ar ~0.93%), nasa / noaa atmospheric composition reference: dry air is approximately 78.08% nitrogen (n2) by volume, making it the most abundant gas in earth's atmosphere, ahead of oxygen (~20.95%) and argon (~0.93%)., nasa / noaa reference atmospheric composition data: dry air is approximately 78% nitrogen (n2) by volume, making it the most abundant gas in earth's atmosphere., nasa and noaa reference: dry air composition is approximately 78% nitrogen (n2), 21% oxygen, making nitrogen the most abundant gas by volume in earth's atmosphere., nasa earth atmosphere composition fact sheet (nitrogen ~78% by volume, most abundant atmospheric gas), nasa earth fact sheet (https://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html) and noaa/national weather service atmospheric composition reference, both stating nitrogen (~78% by volume) is the most abundant gas in earth's atmosphere., nasa earth fact sheet (https://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html) and noaa/national weather service atmospheric composition summary both state earth's dry atmosphere is ~78% nitrogen (n2) by volume, making nitrogen the most abundant gas., nasa earth fact sheet (https://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html): dry atmosphere composition ~78.08% nitrogen by volume, the most abundant gas, nasa earth fact sheet (https://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html): earth's atmosphere is 78.08% nitrogen by volume, the most abundant gas, followed by oxygen at 20.95%., nasa earth fact sheet (https://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html): nitrogen (n2) is ~78.08% of dry atmospheric air by volume, the largest single component., nasa earth fact sheet (nssdc.gsfc.nasa.gov) and noaa/us epa atmospheric composition references, both stating n2 is ~78% of dry air by volume, the largest single component, nasa earth fact sheet (nssdc.gsfc.nasa.gov): dry atmosphere composition ~78.08% nitrogen (n2), ~20.95% oxygen (o2); nitrogen is the most abundant gas, nasa earth fact sheet (nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html) and us epa atmospheric composition references both state nitrogen (n2) is ~78% of dry air by volume, the most abundant atmospheric gas, nasa earth fact sheet (nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html): dry atmosphere composition is 78.08% nitrogen by volume, the most abundant gas, nasa earth fact sheet (nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html): earth's atmosphere is 78.08% nitrogen by volume, the most abundant gas, followed by oxygen (20.95%)., nasa earth fact sheet (nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html): n2 is listed as ~78.08% of the atmosphere by volume, the largest share of any gas, ahead of o2 (~20.95%)., nasa earth fact sheet / noaa atmospheric composition reference: dry air is approximately 78.08% nitrogen (n2), 20.95% oxygen (o2), making nitrogen the most abundant gas, nasa earth fact sheet / noaa atmospheric composition reference: earth's atmosphere is approximately 78% nitrogen (n2), 21% oxygen (o2), by volume of dry air, nasa earth fact sheet / noaa: dry air composition by volume is approximately 78% nitrogen (n2), the most abundant atmospheric gas, nasa earth fact sheet / noaa: dry atmosphere composition is approximately 78.08% nitrogen (n2), 20.95% oxygen (o2), nasa earth fact sheet / noaa: dry atmosphere composition is ~78% nitrogen (n2), the most abundant gas by volume, nasa earth fact sheet / noaa: dry atmosphere is approximately 78% nitrogen by volume, the most abundant gas, nasa earth fact sheet / noaa: dry atmosphere is ~78% nitrogen (n2) by volume, the most abundant gas, nasa earth fact sheet / noaa: earth's atmosphere is approximately 78% nitrogen (n2) by volume, the most abundant constituent gas of dry air, nasa earth fact sheet / u.s. standard atmosphere: dry air is ~78% nitrogen (n2) by volume, the most abundant atmospheric gas, nasa nssdc earth fact sheet (nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html): n2 78.08%, o2 20.95% by volume of dry air, nasa nssdc earth fact sheet, https://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html : dry air is 78.08% nitrogen (n2) by volume versus 20.95% oxygen (o2), the next largest component (cross-checked against the kasting 1993 / standard atmosphere composition quoted by noaa)., nasa science, facts about earth (https://science.nasa.gov/earth/facts/): near the surface, the atmosphere consists of 78% nitrogen, 21% oxygen, and 1% other gases., nasa science, facts about earth, atmosphere: https://science.nasa.gov/earth/facts/ (78% nitrogen, 21% oxygen, 1% other gases)., nasa/noaa and standard atmospheric science references (e.g., us standard atmosphere) state earth's atmosphere is approximately 78% nitrogen (n2) by volume, the most abundant gas in dry air, ahead of oxygen (~21%) and argon (~0.9%)., nasa/noaa and standard atmospheric science references: earth's atmosphere by volume is approximately 78% nitrogen (n2), the most abundant gas, followed by ~21% oxygen., nasa/noaa atmospheric composition reference: earth's atmosphere is approximately 78% nitrogen (n2) by volume, the most abundant gas, followed by ~21% oxygen., nasa/noaa: earth's atmosphere by volume is approximately 78% nitrogen (n2), 21% oxygen (o2); nitrogen is the most abundant gas, nasa/noaa: earth's atmosphere is approximately 78% nitrogen (n2) by volume, making it the most abundant gas, followed by oxygen (~21%)., nasa/noaa: earth's atmosphere is approximately 78% nitrogen and 21% oxygen by volume; nitrogen (n2) is the most abundant gas., nasa/noaa: earth's atmosphere is approximately 78% nitrogen by volume, the most abundant gas in dry air, noaa / nasa atmospheric composition reference: dry air is ~78% nitrogen (n2) by volume, the most abundant gas, noaa / nasa atmospheric composition reference: nitrogen (n2) is approximately 78% of dry air by volume, the largest fraction of any atmospheric gas, noaa / nasa atmospheric composition references: dry air is approximately 78% nitrogen (n2), 21% oxygen, making nitrogen the most abundant gas by volume, noaa / nasa: earth's atmosphere is about 78% nitrogen by volume, the most abundant gas (https://www.noaa.gov/jetstream/atmosphere/layers-of-atmosphere), noaa / nasa: earth's atmosphere is approximately 78% nitrogen by volume, the most abundant gas, followed by oxygen (~21%)., noaa / national weather service, jetstream: atmospheric composition (https://www.weather.gov/jetstream/atmos_layers) — dry air composition ~78.08% nitrogen (n2), ~20.95% oxygen (o2); nitrogen is the most abundant gas, noaa / us standard atmosphere: dry air is ~78% nitrogen (n2) by volume, the most abundant atmospheric gas, noaa global monitoring laboratory / nasa: dry air composition is approximately 78% nitrogen (n2), 21% oxygen (o2); nitrogen is the most abundant gas by volume., noaa global monitoring laboratory / u.s. nasa: dry air is approximately 78% nitrogen (n2), 21% oxygen (o2); nitrogen is the most abundant gas in earth's atmosphere by volume., noaa global monitoring laboratory / u.s. standard atmosphere composition tables: dry air is approximately 78.08% nitrogen (n2) by volume, the most abundant atmospheric gas, followed by ~20.95% oxygen and ~0.93% argon., noaa global monitoring laboratory / us epa: dry atmosphere composition is approximately 78% nitrogen, 21% oxygen, making nitrogen the most abundant gas by volume, noaa global monitoring laboratory, basics of the carbon cycle (https://gml.noaa.gov/outreach/carbon_toolkit/basics.html), noaa global monitoring laboratory, basics of the carbon cycle: https://gml.noaa.gov/outreach/carbon_toolkit/basics.html, noaa jetstream, "the atmosphere" (https://www.noaa.gov/jetstream/atmosphere): dry-air composition table reports nitrogen (n2) at 78.084%, the largest share, and states nitrogen "by far is the most common"., noaa jetstream, 'the atmosphere' (nitrogen 78.084% by volume of dry air, stated as 'by far the most common'); corroborated by wikipedia, 'atmosphere of earth' composition table (n2 78.084% / 780,840 ppm), noaa jetstream, the atmosphere (https://prod-01-alb-www-noaa.woc.noaa.gov/jetstream/atmosphere), noaa jetstream, the atmosphere: https://prod-01-alb-www-noaa.woc.noaa.gov/jetstream/atmosphere, noaa national centers for environmental information / nasa: dry air composition is approximately 78.09% nitrogen (n2) by volume, the most abundant atmospheric gas, noaa national weather service - jetstream: atmospheric composition (https://www.weather.gov/jetstream/atmos_intro), noaa national weather service jetstream: composition of dry air is about 78% nitrogen, 21% oxygen, noaa/nasa and standard atmospheric science references (e.g. nasa earth fact sheet) state earth's atmosphere by volume is approximately 78% nitrogen (n2), the most abundant gas, followed by ~21% oxygen., noaa/nasa and standard atmospheric science references state dry air is approximately 78% nitrogen (n2) by volume, making it the most abundant gas in earth's atmosphere, ahead of oxygen (~21%)., noaa/nasa atmospheric composition reference: dry air is approximately 78.08% nitrogen (n2) by volume, making nitrogen the most abundant gas in earth's atmosphere, ahead of oxygen (~20.95%) and argon (~0.93%)., noaa/nasa atmospheric composition reference: dry air is approximately 78.09% nitrogen (n2) by volume, the most abundant atmospheric gas, noaa/nasa atmospheric composition reference: dry air is ~78.09% nitrogen (n2) by volume, the most abundant atmospheric gas, noaa/nasa atmospheric composition references: dry air is approximately 78% nitrogen (n2) by volume, making it the most abundant gas in earth's atmosphere, noaa/nasa atmospheric composition references: dry air is ~78% nitrogen (n2) by volume, the most abundant atmospheric gas, noaa/nasa reference on atmospheric composition: dry air is ~78% nitrogen (n2) by volume, the most abundant gas, noaa/nasa reference: dry atmospheric air is composed of ~78.08% nitrogen (n2) by volume, the most abundant gas, followed by oxygen (~20.95%) and argon (~0.93%)., noaa/nasa reference: dry atmospheric composition is ~78.08% nitrogen (n2) by volume, the most abundant gas, followed by ~20.95% oxygen, noaa/nasa standard atmospheric composition reference: dry air is approximately 78% nitrogen (n2) by volume, making it the most abundant gas in earth's atmosphere, noaa/nasa standard atmospheric composition references (e.g. nasa earth fact sheet, noaa): dry air by volume is approximately 78% nitrogen (n2), 21% oxygen (o2); nitrogen is the most abundant gas., noaa/nasa-cited atmospheric composition: dry air is ~78% n2, ~21% o2, ~1% other gases; nitrogen is the most abundant gas by volume., noaa/nasa: earth's atmosphere is approximately 78% nitrogen by volume, the most abundant gas, nssdc.gsfc.nasa.gov, prod-01-alb-www-noaa.woc.noaa.gov, scied.ucar.edu, u.s. national oceanic and atmospheric administration (noaa) / general atmospheric science reference: earth's atmosphere by volume is approximately 78% nitrogen (n2), the most abundant gas, followed by ~21% oxygen and ~0.9% argon., www.britannica.com, www.nesdis.noaa.gov, www.noaa.gov

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  2. answered149 of 149 agreed140 needed
    #1409nitrogenfrom science.nasa.gov
    #1039nitrogenfrom science.nasa.gov
    #294nitrogenfrom en.wikipedia.org
    #729nitrogenNOAA National Centers for Environmental Information / NASA: dry air composition is approximately 78.09% nitrogen (N2) by volume, the most abundant atmospheric gas
    #1566nitrogenfrom science.nasa.gov
    144 more
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