What is acid rain? | Almanac.com

What is acid rain?

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What is acid rain?
This term was coined in 1872 by a British chemist, Robert Angus Smith. It has come to mean rain, snow, sleet, or other precipitation that has been polluted by acids, such as sulfuric and nitric acids. These acids are produced by burning gasoline, coal, and oil. Acid rain creates acid lakes, which can threaten plant and fish life.