Quiz #131 Effects of Changes in Ecosystems

Biologists observe and record the deer population. They notice that the population is four times the larger than the habitat can support. Which is least likely to occur from the overpopulation of deer?

• The grass population in the deer's habitat will begin to decrease.

• The deer population will be stronger and healthier.

• The area's water source will be reduced or depleted.

• The deer will not be able to survive there..

The Texas Kangaroo Rat, native to north-central Texas, makes its home in mesquite bushes. If the mesquite bushes are cleared for human homes , which of the following is the most probable result?

• The rat population will rise.

• The rat population will decline.

• The rat population will stay the same.

• The rat population will double.

Field mice eat corn. Which would most likely happen if the field mouse population grew?

• There would be more corn to feed the field mice.

• There would be less corn due to the mice eating it.

• The habitat would get overpopulated because the mice woudl eat too much.

• The predator of the mice would not have corn to eat.

If the population of prey increases, the population of predators will ________because of the availability of food.

• decrease

• stay the same

• increase

• none of the above

When humans cut down trees then _________________.

• animals will not have any food either

• animals will struggle to find trees and plants for food and shelter

• all the plants will die

• animals will not have any problems finding shelter