Acid Rain

Rainwater normally contains tiny amounts of acid, but this causes little damage. When mixed with some pollutants, though, it becomes much more acid, and produces harmful rain known as acid rain.

Many animals cannot survive the higher acid levels, for example in lakes and rivers. Trees and other plants suffer as the acid makes them less resistant to frost and to attack by insects and diseases.

Acid rain also eats into and dissolves the surfaces it lands on, such as rocks. Harmful minerals are washed out of some rocks, and these do further damage to animals and plants.

Backward <-- | --> Forward