Moderate

Carbon monoxide is a major pollutant of:

Correct answer: B. Air

  • A. Water
  • B. Air
  • C. Noise
  • D. Soil

Explanation

Carbon monoxide is an air pollutant produced mainly by incomplete combustion, including vehicle exhaust and burning fuels. It is not primarily classified as a water, soil, or noise pollutant.

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Practise Forest Ecology

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