Question

multiple - choice question
how do prey affect the size of a predator population?
prey will quite often begin to feed on the predators.
if the population of prey decreases, predators may not have enough food, causing the predator population to decrease.
prey population does not ever effect predator populations as the predators just find other food.
rewatch

Explanation:

Prey are the food source for predators. A decline in prey population means less food for predators, which can lead to a decrease in the predator population due to starvation, reduced reproduction, etc. Predators generally do not have an infinite alternative food - source, and prey do not typically feed on predators.

Answer:

If the population of prey decreases, predators may not have enough food, causing the predator population to decrease.