Which of the following are ecological benefits of reintroducing wolves to Yellowstone National Park?
A: growth of aspen and cottonwood trees near stream banks, due to fewer elk gathering near streams
B: decrease in coyote population, which in turn has increased food sources for birds of prey
C: an increase in water temperature of streams within the park, decreasing the number of trout
D: A and B only
E: All of the above
A: growth of aspen and cottonwood trees near stream banks, due to fewer elk gathering near streams
B: decrease in coyote population, which in turn has increased food sources for birds of prey
C: an increase in water temperature of streams within the park, decreasing the number of trout
D: A and B only
E: All of the above
举一反三
- Which of the following states doesn’t cover the Yellowstone National Park?
- 中国大学MOOC: Which of the following is not the typical landscape in Yellowstone National Park?
- Which of the following is not included in the functional area of Yellowstone national park? A: original nature reserve B: special nature reserve C: park development zone D: park use area
- Which of the following is not the typical landscape in Yellowstone National Park? A: geysers B: hot springs C: mountains D: beaches
- Famous bird, ( ) which is a U.S. national symbol, lives in Yellowstone National Park?