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What is amount of oxygen in the atmosphere in terms of volume​

Answer»

Answer:By volume, dry air contains 78.09% nitrogen, 20.95% OXYGEN, 0.93% argon, 0.04% carbon dioxide, and small amounts of other GASES. Air ALSO contains a variable amount of water VAPOR, on average around 1% at SEA level, and 0.4% over the entire atmosphere.

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