Multiple Choice
In comparison to past estimates, extinction rates are currently high. Which of the following is the most plausible explanation?
A) Natural fluctuations in climate causes extinctions.
B) Continental drift is causing rapid changes in climate, which, in turn, causes extinctions.
C) Previous extinctions make survival of contemporary species more difficult.
D) Humans are affecting many aspects of the global environment.
Correct Answer:

Verified
Correct Answer:
Verified
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