what is the composition of air?Describe it
Air contains about 78% nitrogen , 21% oxygen , 0.9% of argon ,0.03% of carbon dioxide and very small amounts of some other gases .
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what is the composition of air?Describe it
Air contains about 78% nitrogen , 21% oxygen , 0.9% of argon ,0.03% of carbon dioxide and very small amounts of some other gases .