Vulnerability To Increased CO2 Concentrations
Increased levels of atmospheric CO2 could, by increasing oceanic acidity, threaten the survival of shell-forming thecostomes. Aragonitic thecostomes have been predicted, under the IPCC's "business as usual" scenario, to become regionally extinct as soon as 2050.
Read more about this topic: Sea Butterfly
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—Henry David Thoreau (1817–1862)