| http://www.w3.org/ns/prov#value | - That???s worrisome because CO2 levels are rising today ??? thanks to the burning of fossil fuels ??? and pushing down seawater pH, researchers report online June 8 in Geology.The worst biodiversity catastrophe we have had in the history of animal life appears to have been associated with ocean acidification and other kinds of environmental changes we anticipate in the coming centuries, says Jonath
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