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- 1. Multiple Choice
Why were there no wolves in Yellowstone from the 1920's to 1995?
There was no prey available, so they starved.
When all the elk died, the wolves moved to Canada.
Humans hunted and killed all the wolves in Yellowstone and the surrounding area.
The wolves migrated south to Texas for a warmer climate.
- 2. Multiple Choice
Without the grey wolf in Yellowstone, the elk population
increased.
decreased slowly.
remained the same.
-
- 3. Multiple Choice
When wolves were eliminated from the ecosystem, how was the population of the producers affected?
Since there were less animals feeding, the producers increased.
The producers decreased because they were getting eaten by all of the elk.
The population of producers remained the same.
The producer population is not important.
- 4. Multiple Choice
What was the fear of the ranchers on the boundaries of the park when the wolves were reintroduced?
They feared they would over run the park.
They feared it would be a waste of money.
They feared the wolves would wander out of the park and kill their livestock.
The ranchers did not fear anything.
- 5. Multiple Choice
Why did the songbird population decrease by the presence of too many elk in Yellowstone?
Elk ate young trees, so birds had fewer places to nest.
Elk ate too many songbirds.
Wolves at songbirds when no elk were available.
- 6. Multiple Choice
The foundation species that creates habitat for fish and amphibians by building dams in rivers is
otters
coyotes
elk
beavers
- 7. Multiple Choice
Beavers returned because...
There were more trees for food and to build dams with.
They liked the warmer temperatures in the park because of climate change.
They are carnivores and will eat the wolves.
They are carnivores and will eat the elk.
- 8. Multiple Choice
How the behavior of the elk change when wolves were reintroduced to Yellowstone?
They did not change their behavior and therefore most elk died.
The elk stayed away from the areas the wolves were. As a result, the trees were able to grow again.
All the elk left the park and did not return.
The wolves were not able to capture the elk.
- 9. Multiple Choice
Wolves are in competition for prey with
bears
coyotes
elk
weasels
- 10. Multiple Choice
What were the effects of reintroducing the wolves back to Yellowstone National Park?
The deer started to die out and became endangered
The wolves started to die out and become endangered
The ecosystem balanced itself with a healthy predator-prey relationship
The ecosystem was unbalanced
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