10) Differentiate pure air and polluted air.

1.	10) Differentiate pure air and polluted air.
Answer» Answer: Explain the differences between pure air and polluted air. ... Pure air is free from germs and harmful GASES. It contains 78% nitrogen, 21% OXYGEN and SMALL amount of other gases and dust particles. Polluted air contains harmful gases and unwanted substances. FLW ME

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Answer:

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