Question

what happens when rain water hits rocks

Answer 1

$\huge\purple {\mathfrak{Bonjour Mate!}}$

Acid rain is a byproduct of both natural and man-made conditions. In the atmosphere, rain mixes with carbon dioxide, nitrous oxide and sulfuric dioxide to form acid rain. These constituents may occur naturally from processes such as volcanic eruptions and the oxidation of rocks, or their presence in the atmosphere may be due to pollutant releases from manufacturing facilities. Acid rain has a direct effect on limestone rocks that occur in soil, below ground and on buildings.