Because this country accepts everything and anything and anyone and everyone from other countries.
Answer: There is pollution in the east river
Explanation: If we think about it cant be a lack of food as it talks about having a large food source. Nor can it be climate change as that would result in a low yellow Perch population. it cant be they aren't able to catch the bird. So the only logical answer is a pollution that the birds are adapted to.
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<u>D. Industrialized Factories</u>
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Explanation:
Limit manufacturing in America
