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.
Assuming that this is referring to the same list of options that was posted before with this question, the best response would be "combative" since there were many battles.
Answer:
to promote and secure civil rights for Muslims.
“True” all the seats will be up for this years elections
Answer: it was the shortest naval route between Europe and Asia.
Explanation: