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posted a question Apr 23, 2012 at 8:14pm
What is the present level of atmospheric carbon dioxide? Why has carbon dioxide concentration risen since 1860?

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Expert answered the question Apr 27, 2012 at 9:24pm
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What is the present level of atmospheric carbon dioxide? Why has carbon dioxide concentration
risen since 1860?
Answer
According to a survey, there is 394.45 ppm concentration of CO2 in the...