uhh, Finally!! the last question..
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what is air?
Answers
Answered by
7
Explanation:
Air is a mixture of many gases and tiny dust particles. ... There is no air in outer space. Air is a mixture of about 78% of nitrogen, 21% of oxygen, 0.9% of argon, 0.04% of carbon dioxide, and very small amounts of other gases.
Answered by
5
Air is a mixture of gases, most of which are naturally occurring. ... The dry composition of the atmosphere is mostly nitrogen and oxygen. It also contains fractional amounts of argon and carbon dioxide and trace amounts of other gases, such as helium, neon, methane, krypton, and hydrogen (NASA).
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