Normal rain is slightly acidic, with a pH between 5 and ____. This is due to naturally occurring ____ dissolving in rainwater. Acid Rain is created in our atmosphere when two pollutants react with the rainwater. Sulphur dioxide gas is released from ____, and Nitrogen dioxide is formed when ____ is burned in ____. When these gases dissolve in rainwater, the water becomes ____ (around pH 4). Although not strong enough to harm humans as it falls, acid rain can be very damaging to the environment. It can speed up the ____ of rocks and buildings. Rivers, lakes and streams become more acidic so that ____ and plants cannot live in them. Soil that becomes more acidic has fewer ____ so trees and other plants cannot grow.

Acid Rain

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