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The species most vulnerable to the introduction of exotic species are those living on isolated islands.

A) True
B) False

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An endemic species is best defined as a species that


A) is a habitat specialist with a large geographical distribution.
B) has so few individuals remaining that it ceases to perform its role within an ecosystem.
C) no longer occurs in a given area yet still survives elsewhere.
D) occurs in a single geographic area and nowhere else.

E) None of the above
F) A) and B)

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As structural diversity within plant communities increases, the number of animal species ________.

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