Wolves of Yellowstone

Name the Interaction.

• Mutualism/Commensalism

• Parasitism

• Predation

• Competition

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NGSS.MS-LS2-2

As the number of gray wolves in Yellowstone increases, the number of elk ____________.

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

As the number of gray wolves in Yellowstone increases, the number of aspen trees ______________.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Cause and Effect. Look at the food web. Due to hunting and competition from the bears, wolves and the mountain lions, the coyote has died out. What is the likely effect of it on the grass?

• The amount of grass is likely going to decrease because there are more rabbits eating it.

• The amount of grass will likely increase now that there are more rabbits eating it.

• The amount of grass will likely remain the same.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Cause and Effect. Look at the Food Web.

Due to hunting and competition from the bears, wolves and mountain lions, the coyote has died out. What is the likely effect on the rabbit population?

• The rabbit population will increase in numbers.

• The rabbit population will die out too.

• The rabbit population does not change.

• The bears will eat the rabbits.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

In 1995, what animal was reintroduced to Yellowstone?

• Groundhogs

• Wolves

• Black Bears

• Sasquatch

What is a trophic cascade? Describe it below using the Wolves of Yellowstone as an example.

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NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is the primary prey of wolves in Yellowstone National Park?

• Elk

• Bison

• Deer

• Moose

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NGSS.MS-LS2-2

How did the reintroduction of wolves in Yellowstone affect the river ecosystems?

• Increased erosion

• Decreased erosion

• No change

• Increased pollution

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NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which year were wolves reintroduced to Yellowstone National Park?

• 1985

• 1995

• 2005

• 2015