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Refer to the Figure

Question 9

Multiple Choice

Refer to the figure.
Refer to the figure.   Considering the food web, imagine a circumstance where a new, mutually beneficial relationship develops between H<sub>2</sub> and H<sub>3</sub>, increasing both of their numbers. The effects of this on P<sub>2</sub> and C<sub>2</sub> are best described as A)  a direct negative effect on P<sub>2</sub> and a trophic facilitation effect on C<sub>2</sub><sub>.</sub> B)  an indirect positive effect on P<sub>2</sub> and a direct negative effect on C<sub>2</sub>. C)  a trophic facilitation effect on both C<sub>2</sub> and P<sub>2</sub><sub>.</sub> D)  a direct negative effect on both C<sub>2</sub> and P<sub>2</sub><sub>.</sub> Considering the food web, imagine a circumstance where a new, mutually beneficial relationship develops between H2 and H3, increasing both of their numbers. The effects of this on P2 and C2 are best described as


A) a direct negative effect on P2 and a trophic facilitation effect on C2.
B) an indirect positive effect on P2 and a direct negative effect on C2.
C) a trophic facilitation effect on both C2 and P2.
D) a direct negative effect on both C2 and P2.

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