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38 votes
The Earth has ________ for the past 2 million years.

A. gradually warmed slowly
B. frozen then quickly thawed
C. gradually cooled
D. stayed the same temperature
E. cycled between hot and cold

User Picaud Vincent
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1 Answer

9 votes
9 votes

The Earth has cooled for the past 2 million years.

User Kangjianwei
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