Acid rain is caused primarily by two air borne pollutants:

Question

Quizplus · Accepted Answer

Acid rain is caused primarily by the combination of sulfur dioxide (SO2) and oxides of nitrogen (NOx) in the atmosphere. These pollutants can come from natural sources, such as volcanic eruptions, but the majority of emissions come from human activities such as burning fossil fuels for energy and transportation. When these pollutants mix with moisture in the air, they form sulfuric acid and nitric acid, which can fall to the ground as acid rain.

Acid Rain Is Caused Primarily by Two Air Borne Pollutants