Question

which material erupted from volcanoes is important in acid rain?
ash
carbon monoxide
sulfur dioxide
carbon dioxide

Explanation:

Sulfur - dioxide emitted from volcanoes can react with oxygen and water in the atmosphere to form sulfuric acid, which is a major component of acid - rain. Ash is mainly solid particles, carbon monoxide is a neutral gas, and carbon dioxide forms carbonic acid which is relatively weak compared to sulfuric acid formed from sulfur - dioxide in the context of acid - rain.

Answer:

sulfur dioxide