The atmospheric concentration of carbon dioxide has
varied over the past 400 000 years. For mo...
Biology, 16.04.2020 04:12 meganwintergirl
The atmospheric concentration of carbon dioxide has
varied over the past 400 000 years. For most of this time,
there was no industrial activity. Why, then, do we think
that the present increase in atmospheric carbon dioxide is
due to human activities?
Answers: 2
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