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Effect of air pollution in 10 marks |
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Answer» Clean, DRY air consists primarily of nitrogen and oxygen—78 percent and 21 percent respectively, by VOLUME. The remaining 1 percent is a mixture of other gases, mostly argon (0.9 percent), along with trace (very small) amounts of carbon dioxide, METHANE, HYDROGEN, HELIUM, and more. Water vapour is also a normal, though quite variable, component of the atmosphere, normally ranging from 0.01 to 4 percent by volume; under very humid conditions the moisture content of air may be as high as 5 percent. |
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