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:
species, century, vegetation, valley, gorge, niche, habitat, carrion, shrub, erosion, ecosystem
turn up, build up, avoid, trap, reintroduce, regenerate, reinforce, quintuplet, stabilize, meander, transform
significantly, radically, slightly
Now take the quiz to test your knowledge of the material in the video.
How Wolves Change Rivers Quiz
0 of 5 questions completed
Click Start quiz to begin.
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
0 of 5 questions answered correctly
Time has elapsed
You have reached 0 of 0 points, (0)
Thank you for participating. If you found this quiz useful, share it with your friends.
Question 1 of 5
1. Question10 points
Match the following words and expressions with their definitions.
- a scientific finding
- a period of hundred years
- an ecological process
- kinds of animals
- to increase
- to change
- to appear
- small trees
- to make stronger
to build up
to turn up
Question 2 of 5
2. Question2 points
When were wolves reintroduced to the Yellowstone National Park?Correct
Question 3 of 5
3. Question2 points
Which species of animals are not mentioned in the video?Correct
Question 4 of 5
4. Question4 points
Which species of animals benefited from the wolves’ presence in the park? Select all that apply.Correct
Question 5 of 5
5. Question7 points
Rearrange the following statements to outline the throphic cascade as observed in the Yellowstone National Park.
Because of wolves' absence in the park the number of deer had increased greatly.
The wolves were reintroduced to the habitat.
The wolves killed some deer.
The deer started avoiding valleys and gorges.
Vegetation started to grow again.
The birds moved in.
New forests stabilized river banks.