Question

Which of the following is correct in a predator-prey cycle?

Options

• A decline in the numbers of predators causes a decline in the number of prey.

• A decline in the numbers of prey causes a decline in the number of predators.

• An increase in the number of predators triggers an increase in the numbers of prey.

• All of the above are correct, causing an up-and-down cycle for each animal.

Answer 1

A decline in the numbers of prey causes a decline in the number of predators.

Explanation:

Predator populations are dependent on the availability of prey as a food source. When the prey population declines, predators face a scarcity of food, which leads to starvation, decreased reproductive rates, or migration, ultimately causing their numbers to decline as well.