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Politics : View from the Center and Left
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To: Bread Upon The Water who wrote (118848)8/19/2009 7:08:11 PM
From: Sam  Read Replies (1) of 541931
 
I think what happens is that as CO2 goes into the ocean, it combines with the water to create carbonic acid. But as it does does so, it leaches out some of the calcium carbonate that is there. Calcium carbonate is used by many shell fish, plankton and coral to make their shells. When there is less that is available--or when it is changed from calcium carbonate to calcium bicarbonate--then shell formation is inhibited. This makes them even more susceptible to the slightly higher acidity of the ocean, and makes it more difficult for them to grow and reproduce.

At least, that is an outline of the story as I understand it. I'll see if I can find someone who knows more than I do to confirm it.
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