Define atmosphere. What is the composition of air?
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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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Atmosphere
Explanation:
The air surrounding the earth is called atmosphere.
the composition of airare:
Carbon dioxide.
Argon.
oxygen.
Hydrogen.
as well as water vapour.
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