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  1. What is Acid Rain? - US EPA

    Mar 4, 2025 · Acid rain, or acid deposition, is a broad term that includes any form of precipitation with acidic components, such as sulfuric or nitric acid that fall to the ground from the …

  2. Acid rain | Definition, Causes, Effects, & Formulas | Britannica

    Acid rain, precipitation possessing a pH of about 5.2 or below mainly produced from the emission of sulfur dioxide (SO2) and nitrogen oxides (the combination of NO and NO2).

  3. Acid rain - Wikipedia

    Acid rain is rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH).

  4. Acid rain causes, effects, and solutions | National Geographic

    Feb 28, 2019 · Acid rain is any form of precipitation that contains high levels of nitric and sulfuric acids. First coined by Scottish chemist Robert Angus Smith in 1852, acid rain can also occur in …

  5. What is acid rain? – The Institute for Environmental Research ...

    Jun 17, 2025 · Acid rain is a specific type of air pollution caused by the deposition of acidic compounds. Unlike other types of pollution, such as smog or particulate matter, acid rain has a …

  6. Guide to acid rain: Causes, effects, and ongoing solutions

    Acid rain, or acid deposition, is precipitation that contains acidic components such as sulfuric and nitric acids. The term ‘acid rain’ encompasses not just rain, but also snow, sleet, fog, dew, and …

  7. Acid Rain: How It Affects Your Health - WebMD

    Oct 10, 2025 · Acid rain forms when water and oxygen in normal precipitation mix with chemicals such as sulfur dioxide and nitrogen oxides. The chemical reaction turns normal rain more acidic.

  8. Understanding Acid Rain: Environmental Impact and Solutions

    Sep 28, 2024 · Acid rain, or acid deposition, is precipitation with elevated levels of hydrogen ions, making it abnormally acidic. Primarily caused by sulfur dioxide and nitrogen oxides from …

  9. Acid Rain and Water | U.S. Geological Survey - USGS.gov

    Aug 2, 2019 · Depending on where you live, maybe you've heard of acid rain. Now, acid rain is not pure acid falling from the sky, but rather it is rainfall or atmospheric moisture that has been …

  10. Acid Rain - Definition, Effects, Disposition, Causes, and ...

    Jul 23, 2025 · Acid Rain Definition: Acid rain or acid deposition can be defined as any form of precipitation with acidic components (pH ≤ 5.2) such as sulfuric acid or nitric acid which …