- Volcanic eruptions and lightening discharge
- Biological decay of vegetable matter
- Photochemical oxidation of organic number
- None of the above
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Answer: Option 4
Natural pollution comes from natural sources like release of methane by cattle and paddy fields, carbon dioxide from plants and animals, dust storms, nitrogen oxides, ozone, volcanic eruptions, emission of natural gas, sol erosion, ultraviolet rays,etc. Mercury is not a cause of natural pollution.
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Answer: Option 1 Let'
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Answer: Option 3 Let'
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Which of the following is not a natural source of air pollution?
Answer: Option 4 Let'
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Answer: Option 2 Let'
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