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What would most likely happen to the populations of organisms in the forest ecosystem if there were no rain for a very long time?Â
Developers cleared a small forest to build an apartment complex near Marie's house. As a result, the amount of habitat for hawks decreased significantly. Since hawks eat mice, what is most likely to happen to the population of mice now that the hawks have fewer places to live?Â
How would a prey species most likely be affected if disease killed most of the predator species?Â
In a forest ecosystem, a disease killed many of the rodents. Which of the following is most likely to occur after this happens?

Use the photograph below to help you answer the question.

A student made a model of a food web in Australia.
A widespread forest fire burned down most of the eucalyptus trees. How would this affect the community?

The table shows the basic needs of a robin.

The graph shows the sizes of two populations. The hare is the prey, and the lynx is the predator.
Using the graph, which statement describes the changes in the ecosystem between 1910-1913?

If a species of predator is removed from an environment, the population of prey animals
The table shows organisms in an ecosystem and what they eat, which transfers energy between them.
Which organisms would receive less energy if rabbits were removed from the ecosystem?
