What trend has been seen throughout Earth's history?

A. Climate has cooled.
B. Greenhouse gas levels and temperature have not been related.
C. Climate has warmed.
D. When greenhouse gas levels are high, temperatures are high.



Answer :

Final answer:

Earth's climate has gone through cycles of warming and cooling influenced by changes in carbon dioxide levels.


Explanation:

Earth's climate has experienced cycles of warming and cooling throughout its history. The rise and fall of carbon dioxide levels in the atmosphere have played a significant role in these temperature fluctuations. Higher levels of greenhouse gases lead to a greenhouse effect, resulting in a warmer climate, while lower levels contribute to cooling periods, including ice ages.


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