but that conclusion holds true only if there are no other sources of c12 increases which are not human caused.
but that conclusion holds true only if there are no other sources of c12 increases which are not human caused.
scientific consensus on climate change:678
the statement concludes with a call for "reduction in anthropogenic (human-caused) sources of carbon dioxide and other greenhouse gas emissions contributing to global climate change and the conservation of co 2- consuming photosynthesizers (i.e., plants)."