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  • Which of the following is a natural cause of air pollution?
Multiple choice

Which of the following is a natural cause of air pollution?

  1. Automobile exhaust

  2. Exhaust from pesticide production unit

  3. Volcano

  4. Petroleum refining

  5. Exhaust from cement factory

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Volcano is a natural cause of air pollution.

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