acid rain definition

  • noun:
    • Acid precipitation dropping as rainfall.
    • Rain which is unusually acid (pH of not as much as the natural selection of 5 to 6); caused primarily by atmospheric air pollution with sulphur dioxide and nitrogen compounds.
    • rain containing acids that kind in the atmosphere when commercial gasoline emissions (especially sulfur dioxide and nitrogen oxides) match liquid

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  • Definition for "acid rain"
    • Acid precipitation dropping as rainfall.
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