Multiple choice

Acid rain is caused by

  1. carbon monoxide and carbon dioxide

  2. sulfur dioxide and nitrogen dioxide

  3. nitrous oxide and carbon monoxide

  4. carbon dioxide and nitrous oxide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Acid rain is primarily caused by the atmospheric emission of sulfur dioxide and nitrogen dioxide, which react with water vapor to form sulfuric and nitric acids.

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