In a tide pool, invertebrate species richness was 15. A researcher experimentally removed one species and over time the species count decreased to eight. The species removed was likely a(n)

A) mutualist.
B) herbivore.
C) detritivore.
D) keystone species.
E) C or D


Ans: D) keystone species.

Biology & Microbiology

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Which of the following is true regarding diffusion?

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Indicate whether the statement is true or false

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