Multiple Choice
Over the past 400 years, humans have documented the extinction of more than ________ species. This modern rate of species extinction is estimated to be ________ the normal extinction rate seen in the fossil record.
A) 100; about the same as
B) 400; about double
C) 1,000; over 100 times greater than
D) 10,000; at least 1 million times greater than
Correct Answer:
Verified
Correct Answer:
Verified
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