Population X and Y live in the same area. The size of population X increases over time. As a direct result, the size of population Y decreases.Which is most likely the limiting factor of population Y?

If population X grows and population Y decreases as a direct result, X is likely limiting Y by preying on it. More predators can cause more individuals of Y to be eaten, reducing Y’s population. If X were prey, its increase would not directly explain a decline in Y.

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