Question

what does acid deposition most commonly occur as?
rain, snow, or fog
volcanic ash
drought conditions
dust storms

Explanation:

Acid deposition is commonly known as acid rain. It occurs when pollutants like sulfur dioxide and nitrogen oxides react with water vapor in the atmosphere. This reaction forms acidic compounds that fall to the ground as rain, snow, or fog. Volcanic ash, drought conditions, and dust storms are not the typical forms of acid deposition.

Answer:

rain, snow, or fog