Is coral really in trouble?

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Offline krool1969

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Is coral really in trouble?
« on: 01/04/2013 02:39:55 »
Coral is one of the oldest extant groups of animals. It has  survived most of the extinction events that have caused the extinction of so many other groups. Clearly it's tough. So why does it seem to be dieing now? If it's climate change how did it survive past climate change?