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What are the composition of air and also mention the uses of Nitrogen and Oxygen?

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Air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Oxygen is used by animal and humans for breathing. It helps in burning. Nitrogen-used by plants to grow and it also used in chemical reactions.

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Ankit Dutt

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