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  4. The CO2 content by volume, in the atmospheric air is about

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Q. The CO2 content by volume, in the atmospheric air is about

AIPMTAIPMT 1997Environmental Issues

Solution:

The atmosphere (air) is a mixture of several gases. Near the earth's surface it consists of 78% nitrogen, 21% oxygen, 0.93% argon, 0.03% carbon dioxide and small quantities of hydrogen, helium, neon, krypton and traces of many other gases.