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  2. Soil acidification - Wikipedia

    en.wikipedia.org/wiki/Soil_acidification

    Soil acidification is the buildup of hydrogen cations, which reduces the soil pH. Chemically, this happens when a proton donor gets added to the soil.

  3. Acidification - Wikipedia

    en.wikipedia.org/wiki/Acidification

    Acidification may refer to: Ocean acidification, decrease in the pH of the Earth's oceans; Freshwater acidification, atmospheric depositions and soil leaching of SOx ...

  4. Ocean acidification - Wikipedia

    en.wikipedia.org/wiki/Ocean_acidification

    Ocean acidification means that the average seawater pH value is dropping over time. [1]Ocean acidification is the ongoing decrease in the pH of the Earth's ocean.Between 1950 and 2020, the average pH of the ocean surface fell from approximately 8.15 to 8.05. [2]

  5. pH - Wikipedia

    en.wikipedia.org/wiki/PH

    There is evidence of ongoing ocean acidification (meaning a drop in pH value): Between 1950 and 2020, the average pH of the ocean surface fell from approximately 8.15 to 8.05. [29] Carbon dioxide emissions from human activities are the primary cause of ocean acidification, with atmospheric carbon dioxide (CO 2) levels exceeding 410 ppm (in 2020).

  6. Freshwater acidification - Wikipedia

    en.wikipedia.org/wiki/Freshwater_acidification

    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]

  7. Estuarine acidification - Wikipedia

    en.wikipedia.org/wiki/Estuarine_acidification

    Estuarine acidification happens when the pH balance of water in coastal marine ecosystems, specifically those of estuaries, decreases. Water, generally considered neutral on the pH scale , normally perfectly balanced between alkalinity and acidity .

  8. Alkalinity - Wikipedia

    en.wikipedia.org/wiki/Alkalinity

    Changes in the balance between terrestrial weathering and sedimentation of carbonate minerals (for example, as a function of ocean acidification) are the primary long-term drivers of alkalinity in the ocean. [19] Over human timescales, mean ocean alkalinity is relatively stable. [20] Seasonal and annual variability of mean ocean alkalinity is ...

  9. Effects of climate change on oceans - Wikipedia

    en.wikipedia.org/wiki/Effects_of_climate_change...

    This chemical reaction produces carbonic acid (H 2 CO 3) which dissociates into a bicarbonate ion (HCO − 3) and a hydrogen ion (H +). The presence of free hydrogen ions (H +) lowers the pH of the ocean, increasing acidity (this does not mean that seawater is acidic yet; it is still alkaline, with a pH higher than 8).