Estimates vary, but reasonable numbers for extinction rates suggest that extinction is occurring at a rate approximately ____ times above the normal background rate.
A) 10
B) 100
C) 1000
D) 10,000
E) 1,000,000
Correct Answer:
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Q1: Today, the major danger to species is
A)
Q2: The breakup of large areas of habitat
Q4: Some animals are facing extinction as a
Q6: The introduction of a foreign species into
Q7: The ability to meet humanity's current needs
Q10: Biological diversity is an index of the
Q10: Building roads, parking lots, buildings and bridges
Q19: A species' numbers are so severely reduced
Q20: Biotic pollution has been particularly harmful to
Q20: Harmful introduced species usually come into an
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