Bears stop coming to a river ecosystem where they have been eating many fish each day. The fish the bears eat
normally eat smaller fish, which eat plants along the river bottom
What happens to the ecosystem?
The larger fish population will drop first and the smaller fish population will grow quickly. The plants will
die off because too many of the smaller fish are eating them
The smaller fish population begins to eat more plants and to grow. The larger fish have more food to
eat so their population is able to grow, too.
The larger fish population explodes at first, and the smaller fish population begins to drop. Eventually
the river runs out of smaller fish so larger fish die out, and the plant population grows.
Both the larger and the smaller fish populations grow quickly but then die out because the plant life is
insufficient for them all to eat