Species Are Often Excluded from Habitat in Which They Could

Species are often excluded from habitat in which they could exist perfectly well in the absence of interspecific competition.As an example,Dolly Varden charr can live in the white-spotted charr zone,but only when

A) That zone is highly populated with white-spotted charr.
B) There are no white-spotted charr present.
C) The two species are found together, the water temperature is higher than usual, and Dolly Varden charr become more aggressive to individuals of its own species.
D) None of the above.

Correct Answer:

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