Multiple choice

Which pollutants are considered to contribute to acid rain?

  1. carbon monoxide and particulates

  2. nitrogen oxides and volatile organics

  3. carbon monoxide and sulfur oxides

  4. nitrogen oxides and sulfur oxides
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Acid rain is primarily caused by the emission of sulfur dioxide (SO2) and nitrogen oxides (NOx), which react with water vapor in the atmosphere to form sulfuric and nitric acids.

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