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1.state primary pollutants and their sources.

2.How toxic pollutant are diluted in the troposphere.

3.Draw a well lebelled dagram of physical structure of atmosphere.

4.Explain ways in which the stratophere is polluted?

5.The air quality standarf foi SO2 is 0.5ppm at S.T.P,convert this concentration to SI unit.

 

 

 

 

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