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Unformatted text preview: -But it is present in the atmosphere in the largest amount CO2 concentrations in Hawaii have steadily increased over the past several decades-CO2 concentrations fluctuate most in the northern hemisphere. Over the past 400ky global temperatures seem to correlate with the CO2 content of the atmosphere.-But we dont know whether the CO2 causes warming or whether warming releases CO2...
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- Fall '08