Historic CO2 concentrations are determined by analyzing CO2 gas bubbles and oxygen isotopes in ice cores.
Historic CO2 concentrations are determined by analyzing CO2 gas bubbles and oxygen isotopes (for temperature) trapped in ice cores.
Front | CO2 levels are |
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Back | fluctuating annually, steadily increasing, at the highest ever recorded, will conform to N hemisphere patters |
Tags: 4_3_carbon_cycling
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