Editing Acid rain (section)

===Ocean acidification===
{{main|Ocean acidification}}
{{expand section|date=July 2013}}
Acid rain has a much less harmful effect on oceans on a global scale, but it creates an amplified impact in the shallower waters of coastal waters.<ref name=WHOI2007>{{cite press release |title=Acid Rain Has A Disproportionate Impact on Coastal Waters |url=https://www.sciencedaily.com/releases/2007/09/070907175147.htm |work=ScienceDaily |publisher=Woods Hole Oceanographic Institution |date=September 15, 2007 |archive-date=June 26, 2020 |archive-url=https://web.archive.org/web/20200626013407/https://www.sciencedaily.com/releases/2007/09/070907175147.htm |url-status=live }}</ref> Acid rain can cause the ocean's pH to fall, known as [[ocean acidification]], making it more difficult for different coastal species to create their [[exoskeleton]]s that they need to survive. These coastal species link together as part of the ocean's food chain, and without them being a source for other marine life to feed off of, more marine life will die.<ref>{{cite web|url=http://www.windows2universe.org/headline_universe/olpa/acid_coasts_7sept07.html|title=Acid Rain Has Disproportionate Impact on Near-Shore Ocean Waters – Windows to the Universe|website=windows2universe.org|access-date=February 27, 2017|archive-date=February 28, 2017|archive-url=https://web.archive.org/web/20170228080549/http://www.windows2universe.org/headline_universe/olpa/acid_coasts_7sept07.html|url-status=live}}</ref> Coral's limestone skeleton is particularly sensitive to pH decreases, because the [[calcium carbonate]], a core component of the limestone skeleton, dissolves in acidic (low pH) solutions.

In addition to acidification, excess nitrogen inputs from the atmosphere promote increased growth of [[phytoplankton]] and other marine plants, which, in turn, may cause more frequent harmful [[algal bloom]]s and [[eutrophication]] (the creation of oxygen-depleted "dead zones") in some parts of the ocean.<ref name=WHOI2007/>