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Biology, 13.02.2020 23:53 josiahespinosa
In a oak hickory forest in Pennsylvania, gray squirrel populations have been declining due to increased predation by hawks and other predators. At the same time, researchers have discovered that the average thickness of acorns in the forest have decreased by 15% due to lower feeding pressure from squirrels. What type of natural selection would this be an example of?
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