Ans: D. There is a correlation between the carbon dioxide concentration and the global average temperature.
Notice that the peaks and troughs on the temperature graph occur at the about the same times as peaks and troughs on the carbon dioxide graph. What can we infer from this fact alone?
A. Higher global average temperatures cause higher carbon dioxide concentrations.
B. Higher carbon dioxide concentrations cause higher global average temperatures.
C. The carbon dioxide concentration is inversely related to the global average temperature.
D. There is a correlation between the carbon dioxide concentration and the global average temperature.
Physics & Space Science
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