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Chemistry

State:

(i) natural sources of air pollution

(ii) man-made sources of air pollution

Pollution

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Answer

(i) Natural sources of air pollution are :

  1. Volcanic eruptions.
  2. Lightning discharge.
  3. Decaying vegetation.
  4. Forest fires.
  5. Winds and dust storms.

(ii) Man-made sources of air pollution are :

  1. Automobiles.
  2. Factories.
  3. Industrial processes.
  4. Burning of fossil fuels.
  5. Decay of crop residue.

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