Which of the following is an example of wet acid deposition?

Wet acid deposition refers specifically to the deposition of acidic substances in a liquid form, primarily through precipitation. This includes rain, snow, and other forms of moisture that fall to the ground and contain elevated levels of acidity, often as a result of pollutants such as sulfur dioxide and nitrogen oxides that are converted to sulfuric and nitric acids in the atmosphere.

Acidic rain and snow contain these acids, which impact ecosystems, alter soil chemistry, and can lead to damaging effects on buildings and other infrastructure. This process contrasts with dry deposition, which involves acidic particles or gases that settle out of the atmosphere onto surfaces without the aid of moisture.

Recognizing the distinction is crucial: while acidic dust and gases can contribute to overall acidity in the environment, they do not represent the wet deposition process characterized by precipitation events like rain or snow. Water vapor alone does not imply acidity and is therefore not classified under wet acid deposition. Thus, the choice of acidic rain and snow accurately identifies the phenomenon of wet acid deposition.