Some biologists believe that life on Earth is in the midst of a sixth major mass-extinction event caused by
A) human activity.
B) loss of genetic diversity due to inbreeding.
C) a gradual decrease in global temperature.
D) sustainable agriculture efforts.
E) coevolution of predator and prey species.
Correct Answer:
Verified
Q23: The minimum viable population is the
A) smallest
Q24: Which human activity is NOT a threat
Q25: The leading cause of extinction by human
Q26: Large mammals and birds require_ acres of
Q27: The most likely explanation for any mass-extinction
Q29: Overexploitation of many species has increased due
Q30: Comparison of the human ecological footprint to
Q31: As a result of global warming,
A) there
Q32: It is difficult to estimate current rates
Q33: Even when a natural ecosystem is not
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