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A Biologist Is Studying Three Species of Small Fish (Sp

Question 20

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  A biologist is studying three species of small fish (sp 1, sp 2, and sp 3)  that cling to the bodies of bigger fish and consume parasites on the larger fish. He conducts an experiment with three treatments. In each treatment, he removes a different one of the small fish species from a large fish and examines the number offspring produced by the large fish. Which of the following conclusions are supported by the data shown in the figure? A)  Species 1 is a mutualist. B)  Species 2 is a mutualist. C)  Species 3 is a mutualist. D)  Species 1 and 2 are mutualists. E)  Species 2 and 3 are mutualists. A biologist is studying three species of small fish (sp 1, sp 2, and sp 3) that cling to the bodies of bigger fish and consume parasites on the larger fish. He conducts an experiment with three treatments. In each treatment, he removes a different one of the small fish species from a large fish and examines the number offspring produced by the large fish. Which of the following conclusions are supported by the data shown in the figure?


A) Species 1 is a mutualist.
B) Species 2 is a mutualist.
C) Species 3 is a mutualist.
D) Species 1 and 2 are mutualists.
E) Species 2 and 3 are mutualists.

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