can anyone help me. to frame questions.. I have online classes.... plz help it should be complecated ...
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1) on what basis pollution can be classified?
2) what are the different types of pollution write in brief
3) what do you mean by air pollution
4) write down the causes of air pollution
5) what do you mean by water pollution
6) how water gets polluted
7) what do you mean by fresh water
8) what do you mean by marine water
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