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The following is also from Science Magazine:
Acid Tests
A somewhat neglected but extremely important consequence of the ongoing anthropogenic rise in the concentration of atmospheric carbon dioxide is that the ocean is becoming more acidic as it absorbs more of the gas. This acidification is making seawater more corrosive toward calcium carbonate, the material used by many marine organisms to make their exoskeletons. Feely et al. (p. 1490, published online 22 May) report results from 13 hydrographic transects from southern Canada to northern Mexico. Potentially corrosive seawater upwelled onto large portions of the continental shelf in 2007. Such seasonal upwelling of such waters onto the shelf is a natural phenomenon, but the ocean uptake of anthropogenic CO2 has exposed increasing portions of the shelf to potentially damaging effects.
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The single biggest source of CO2 is the oceans. The oceans spend 100,000 years absorbing CO2 during the 100,000 year long ice ages and only 10,000 years outgassing CO2. |
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