Biology, 26.11.2020 06:30, ssalazc1593
The changes that occurred in Yellowstone National Park after all of its wolves
were killed showed that wolves are
A. harmful to the ecosystem
B. a keystone species in the ecosystem
C. a producer in the ecosystem
D. the only predators in the ecosystem
Answers: 3
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The changes that occurred in Yellowstone National Park after all of its wolves
were killed showed t...
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