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How Do Scientists Know That Recent Climate Change Is Largely Caused By Human Activities? |
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Answer» Direct measurements of CO2 in the atmosphere and in air trapped in ice show that atmospheric CO2 increased by about 40% from 1800 to 2012. Measurements of different forms of CARBON reveal that this INCREASE is because of human activities. Direct measurements of CO2 in the atmosphere and in air trapped in ice show that atmospheric CO2 increased by about 40% from 1800 to 2012. Measurements of different forms of carbon reveal that this increase is because of human activities. |
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