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  2. Acid rain - Wikipedia

    en.wikipedia.org/wiki/Acid_rain

    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).Most water, including drinking water, has a neutral pH that exists between 6.5 and 8.5, but acid rain has a pH level lower than this and ranges from 4–5 on average.

  3. Freshwater acidification - Wikipedia

    en.wikipedia.org/wiki/Freshwater_acidification

    Diagram depicting the sources and cycles of acid rain precipitation. Freshwater acidification occurs when acidic inputs enter a body of fresh water through the weathering of rocks, invasion of acidifying gas (e.g. carbon dioxide), or by the reduction of acid anions, like sulfate and nitrate within a lake, pond, or reservoir. [1]

  4. Category:Presentation software - Wikipedia

    en.wikipedia.org/wiki/Category:Presentation_software

    Download as PDF; Printable version; In other projects ... Free presentation software (10 P) P. ... Pages in category "Presentation software" The following 54 pages ...

  5. Acid Rain Program - Wikipedia

    en.wikipedia.org/wiki/Acid_Rain_Program

    The Acid Rain Retirement Fund (A.R.R.F) is an all-volunteer, non-profit environmental educational organization, incorporated in Maine, dedicated to reducing pollution by purchasing and "retiring" marketable sulfur dioxide emissions allowances issued by the U.S. Environmental Protection Agency’s Acid Rain Program. A.R.R.F. was created in 1995 ...

  6. Heat recovery steam generator - Wikipedia

    en.wikipedia.org/wiki/Heat_recovery_steam_generator

    Emissions controls may also be located in the HRSG. Some may contain a selective catalytic reduction system to reduce nitrogen oxides (a large contributor to the formation of smog and acid rain) or a catalyst to remove carbon monoxide. The inclusion of an SCR dramatically affects the layout of the HRSG.

  7. Alkaline precipitation - Wikipedia

    en.wikipedia.org/wiki/Alkaline_precipitation

    The principal cause of alkaline rain are emissions from factories and waste deposits. Mineral dust containing large amounts of alkaline compounds such as calcium carbonate can also increase the pH of precipitation and contribute to basic rain. [3] Alkaline rain can be viewed as opposite to acid rain.

  8. Appalachian temperate rainforest - Wikipedia

    en.wikipedia.org/wiki/Appalachian_temperate...

    The Appalachian temperate rainforest has a cool and mild climate and meets the criteria of temperate rainforests identified by Alaback. [1] Temperature and precipitation are extremely variable with elevation, with rainforest conditions usually but not always concentrated around spruce–fir forests at higher elevations.

  9. File:Origins of acid rain.svg - Wikipedia

    en.wikipedia.org/wiki/File:Origins_of_acid_rain.svg

    The following other wikis use this file: Usage on ar.wikipedia.org مطر حمضي; Usage on bh.wikipedia.org एसिड बरखा; Usage on bn.wikipedia.org

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