Use an example to explain how a limiting factor can prevent a population from increasing indefinitely.

Identify an example of parasitism, and describe the interaction between the two species.

Explain why parasites usually do not kill their hosts.

If a pheasant population was introduced to a large grassy island with no predators, explain what might happen to their population over the next 10-120 years.

If the pheasant population grew for awhile, leveled off, and then started decreasing quickly, what are some reasons it might began decreasing.

In the winter, a family of coyotes crossed over to the island on the frozen lake. What do you think happened to the pheasant population.

In an ecosystem, ducks, raccoons and turtles all live there. Explain what interactions do you thing will take place.

If the duck population decreased, what do you think will happen to the other two populations?

If the turtle population decreased, what do you think will happen to the other two populations?

If the raccoon population decreased, what do you think will happen to the other two populations?

Some prey species blend with their surroundings while others are brightly colored. How can these defenses help species to survive? Choose the best answer.

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