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Ah, what you want to say is you only care for the fast death of coral reefs and don't care for things that ensure its death but will take maybe a decade or two?

pH does not fluctuate much, true, but it drops steadily which is just as deadly to coral.

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If it takes a few more decades, we could presumably find/implement better solutions.

Corals are more likely to survive a slow than a fast change as well. I don't think we know that much about how evolution bottlenecks work, but I'd think it's easier to adapt to a radically different environment in three generations than one.

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