Read the following passage. Then complete parts a and b. The land area that became Yellowstone National Park originally had an important population of wolves. The wolves helped control the populations of multiple other species in the area. When wolves were overhunted and disappeared from the park, it affected the populations of many other species. When wolves were later successfully reintroduced, it helped restore the proper population levels for a wide variety of species, including elk, beavers, birds, and even certain species of trees and shrubs. (2 points)
a. Claim: Wolves must be blank because they have blank on the rest of their ecosystem.
b. Sort the following facts according to whether they support the claim from part a. All of the statements are true, but only two of them directly support the correct claim from part a.(2 points)
Facts Directly Supporting the Correct Claim from Part a
Facts Not Directly Supporting the Claim
a. Claim: Wolves must be present because they have a beneficial impact on the rest of their ecosystem.
b.
Facts Directly Supporting the Correct Claim from Part a:
- The presence of wolves helps control the populations of multiple other species in the area.
- The reintroduction of wolves helped restore proper population levels for a wide variety of species.
Facts Not Directly Supporting the Claim:
- The land area that became Yellowstone National Park originally had an important population of wolves.
- Wolves were overhunted and disappeared from the park.
- Wolves were later successfully reintroduced.
- The populations of many other species were affected when wolves disappeared from the park.
- Species such as elk, beavers, birds, and certain species of trees and shrubs were impacted by the reintroduction of wolves.