Biodiversity experts estimate that during this century,the extinction rate due to human activities will rise to ____ times the background extinction rate.
A) 3
B) 10
C) 20
D) 100
E) 10,000
Correct Answer:
Verified
Q15: An endangered species _.
A) may soon become
Q16: The rate at which extinctions occurred prior
Q17: Because birds live in every climate and
Q18: Biodiversity hotspots are _.
A) tropical areas where
Q19: After a mass extinction,what happens to biodiversity
Q21: Some toxic chemicals,such as those in DDT,can
Q22: Four of the following have resulted in
Q23: Which statement about the introduction of non-native
Q24: According to researchers,the greatest threat to wild
Q25: Which effect below is not a result
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