Which of the following involves a situation in which a density-dependent factor influences a population?
Question 18 options:

Several seasons passed during which rainfall was ample, winters were not severe and food for snow hares was in good supply.

A hurricane severely disrupted a salt marsh and uprooted most of the marsh grass in an estuary.

A forest fire on the north side of a mountain forced the white-tailed deer from the north side to move into the range of the white-tailed deer on the south side of the mountain, making food more scarce.

After a heavy rain, pesticides that were applied to a cotton crop to control weevils ran off into a waterway that flows next to a field.