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Originally Posted by longbough
no we don't
Organic life and decay
150 gigatons of CO2 per year
Volcanoes
165 gigatons of CO2 per year
Human activity
6.5 gigatons of CO2 per year
also of note:
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Please cite a source when presenting stats and graphs like these. Without a source your post carries no weight as anyone could just make these figures up.