It was hot, with high CO2 levels during the Triassic. Yet shellfish were huge. Dr. Chicken Little tells us that sea shells dissolve at 500 ppm.
Disrupting the Borg is expensive and time consuming!
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it was huge but without CO2 it would’ve been humongous.
besides it’s dead now and that’s compatible with it having been killed by excess CO2
The Nautilus is still hanging in there:
http://en.wikipedia.org/wiki/Nautilus
Is that a fossilized tear on its eye? All of that carbonic acid must have stung.
Remember, only you can prevent ocean acidification death.