Ocean Circulation May Have Released CO2 at End of Ice Ages

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At the end of each ice age, the ocean exhales carbon dioxide. Scientists believe this explains the difference in atmospheric CO2 concentrations between ice ages, which have lower concentrations of carbon dioxide, and warmer, more CO2-saturated periods like the one we’re living in now.

What causes that carbon dioxide to exit the ocean when an ice age ends?

Click on the pictures to learn more about CO2 releases.

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