Question

what is the meaning
of acid rain

Answer 1

HERE IS YOUR ANSWER
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Acid Rain is the one of the consequences of air pollution. it occurred when emission from factories, car or heating boiler contact with water in the atmosphere
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Answer 2

Rainfall becomes so acidic by atmospheric pollution by that it causes environmental harm chiefly to forest and lakes. The main cause of the acidic rain is the industrial burning of coal and other fossil fuels, the waste gases from which contains Sulphur and nitrogen oxide which combines with atmospheric water to form acids.