Biology, 02.04.2020 19:58 rubiim9610
A large number of breeding birds in Yellowstone nest and feed in stands of aspen, willow and cottonwood. How do you think the return of the wolf will impact these populations? a. By increasing tree abundance, wolves will directly reduce bird population sizes. b. By decreasing tree abundance, wolves will indirectly reduce bird population sizes. c. By increasing tree abundance, wolves will indirectly boost bird population sizes. d. Because wolves do not directly interact with trees, they are unlikely to impact bird population sizes.
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