Have you ever wondered about the impact animals have on other animals and on their environment? Watch the video to learn about the changes to the habitat that resulted after reintroducing wolves to the Yellowstone National Park.
Use the dictionary to study any of the following words that may not be familiar to you:
Nouns:
species, century, vegetation, valley, gorge, niche, habitat, carrion, shrub, erosion, ecosystem
Verbs:
turn up, build up, avoid, trap, reintroduce, regenerate, reinforce, quintuplet, stabilize, meander, transform
Adverbs:
significantly, radically, slightly
Now take the quiz to test your knowledge of the material in the video.
How Wolves Change Rivers Quiz
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Question 1 of 5
1. Question
10 pointsMatch the following words and expressions with their definitions.
Sort elements
- a scientific finding
- a period of hundred years
- an ecological process
- kinds of animals
- to increase
- to change
- to appear
- greatly
- small trees
- to make stronger
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discovery
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century
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throphic cascade
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species
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to build up
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to transform
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to turn up
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significantly
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shrubs
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to reinforce
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Question 2 of 5
2. Question
2 pointsWhen were wolves reintroduced to the Yellowstone National Park?
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Question 3 of 5
3. Question
2 pointsWhich species of animals are not mentioned in the video?
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Question 4 of 5
4. Question
4 pointsWhich species of animals benefited from the wolves’ presence in the park? Select all that apply.
Correct
coyotes
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Question 5 of 5
5. Question
7 pointsRearrange the following statements to outline the throphic cascade as observed in the Yellowstone National Park.
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Because of wolves' absence in the park the number of deer had increased greatly.
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The wolves were reintroduced to the habitat.
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The wolves killed some deer.
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The deer started avoiding valleys and gorges.
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Vegetation started to grow again.
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The birds moved in.
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New forests stabilized river banks.
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