A climate scientist develops a presentation on modern climate change for a group of policymakers.
What observation does the scientist include in the presentation that provides evidence of human attribution to current climate change?
A climate scientist develops a presentation on modern climate change for a group of policymakers.
What observation does the scientist include in the presentation that provides evidence of human attribution to current climate change?
Atmospheric CO2 with isotopes consistent with fossil fuel emissions have increased since the mid-20th century. This observation directly links the rise in CO2 levels to the burning of fossil fuels, which is a human activity. This provides strong evidence of human attribution to current climate change.
B is NOT ok. ppm = parts per million, not parts per thousand
The correct statement is that atmospheric CO2 concentrations have increased by approximately 135 parts per million (ppm)
atmospheric CO2 has increased since industrial age. answer is A
Also B it is ok.
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