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Acid rain isn't a big problem with coral compared with other pollutants even though the carbonate would certainly be eaten away by acid rain.

This apparent contradiction is due to the fact that the coral is in seawater which is slightly alkaline and buffered by the various salts present in it.

The big problem with coral is carbon dioxide. The amount of acidification due to carbon dioxide (a global clinate change gas) is greater than acid rain's impact. Carbon dioxide dissolves in water to produce a weak acid which dissolves the coral and shells of mollusks like clams and oysters.

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16y ago

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