what is composition of air
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Composition of air
Nitrogen — 78 percent. Oxygen — 21 percent. Argon — 0.93 percent. Carbon dioxide — 0.04 percent. Trace amounts of neon, helium, methane, krypton and hydrogen, as well as water vapor.
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the air in earth's atmosphere is made up of approximately 78 percent nitrogen and 21 precent oxygen.Air also has small amounts of lots of other gases,too,such as carbon dioxide,neon,and hydrogen
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