What causes acid precipitation? *

Acid precipitation begins when compounds such as sulfur dioxide and nitrogen oxide emanating from pollution (which come from factories, vehicles, power plants, and boilers) mix with water or oxygen in the atmosphere.

Explanation:

Acid precipitation is produced by the concentration of nitrogen oxides and sulfur dioxide that react with particles of water or oxygen in suspension in the atmosphere, creating nitrogen acids and sulfur acids.

These concentrations of oxides and dioxides are, above all, created by the human hand, due to the vapors emanating from the burning of fossil fuels.

In addition to the fact that this rain contaminates any body of water with which it has contact, destroying entire aquatic ecosystems.

81 is a composite number.