Question

3. Use the drop down menus to complete the paragraph describing the events related to the reintroduction of the grey wolves into Yellowstone National Park.(6 points) Before people understood their importance in the ecosystem, the was hunted almost to extinction. Because of this, the population grew much too large. They overgrazed and caused significant reduction in the population of . When the grey wolf was reintroduced, they began to naturally the population of elk. This allowed the cottonwood tree population to . After several years of adjustment, all three populations and showed healthy oscillation in the ecosystem.

Answer 1

Before people understood their importance in the ecosystem, the grey wolf was hunted almost to extinction. Because of this, the population of grey wolves grew much too large. They overgrazed and caused significant reduction in the population of elk. When the grey wolf was reintroduced, they began to naturally control the population of elk. This allowed the cottonwood tree population to recover. After several years of adjustment, all three populations stabilized and showed healthy oscillation in the ecosystem.