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The Rate of Background Extinctions Per Year Per Million Species

Question 25

Multiple Choice

The rate of background extinctions per year per million species is

A) 0.1 to 1.0 species.
B) 0.001 to 0.01 species.
C) 1.0 to 10 species.
D) 10 to 100 species.
E) No answer is correct.

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