Multiple Choice
Compared with past estimates,extinction rates are currently high.What is the most plausible explanation for this increase?
A) Natural fluctuations in climate are causing extinctions.
B) Continental drift is causing rapid changes in climate; these changes, in turn, cause 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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