Wolf as a Keystone Species

How did the presence of wolves affect soil erosion in Yellowstone?

• Increased due to digging by wolves

• Increased due to trampling

• Decreased due to vegetation recovery

• Remained unchanged

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How did the reintroduction of wolves affect the deer behavior?

• Deer learned to hunt smaller animals

• Deer avoided certain areas, leading to vegetation recovery

• Deer became nocturnal

• Deer populations increased

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Why were wolves reintroduced to Yellowstone?

• To study their behavior in a controlled environment

• To increase the tourist attraction

• To control the deer population

• Because they were native to the area

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Which species benefited from the wolves' predation on coyotes?

• Deer

• Rabbits and mice

• Fish

• Coyotes

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What was a significant change in the Yellowstone ecosystem due to wolves?

• Transformation of the physical geography

• Decrease in overall biodiversity

• Introduction of new plant species

• Elimination of all deer

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What does "the wolves were RE-introduced to Yellowstone national park" mean?

• The Wolf was introduced to the word RE

• The Wolf sang do RE me fa so la ti do

• The wolf species used to inhabit Yellowstone National Park 100 years ago but was killed off and is now being brought back.

• The Wolf is re applying for a job at McDonalds

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