The true statementls about acid rain is/are

Acid rain is rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH). Acid rain is caused by emissions of sulphur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. It is specific features that are:
A. It has distinct effect on soil microbiology and environmental chemistry.
B. The acid pollutants emitted in one country may be deposited as acid precipitation in several countries.
C. Acid rain affects both aquatic systems as well as vegetation.