What is acid rain, and what causes it?
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4th Apr, 2021
Acid rain is precipitation that is unusually acidic. It has a high concentration of hydrogen ions or low pH. It is primarily caused by emissions of sulfur dioxide and nitrogen oxides from burning fossil fuels, industrial processes, and vehicle exhaust. These gases react with water, oxygen, and other chemicals in the atmosphere to form sulfuric acid and nitric acid, which then fall to the earth as acid rain.
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