A_________ species is fundamentally essential to an ecosystem; its loss changes the structure of the entire community, even though it may only represent a small portion of the population.
A) footprint
B) keystone
C) redundant
D) baseline
E) rivet
Correct Answer:
Verified
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
Q34: In less-developed countries, many species are being
Q35: Pollutants such as_ may affect the reproduction
Q37: An introduced species is ʺinvasiveʺ if it
A)
Q38: The largest threat to global biodiversity, as
Q39: The ecological footprint of the human species
Q40: Sea turtle populations are threatened with extinction
Q41: In the wild, plants depend on bacteria
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