Trophic Cascades

Why was the songbird population reduced 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.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

A niche ________________.

• is the function that an organism performs in the food web of that community.

• includes everything else the organism does and needs in its environment.

• is specific to each individual animal and plant.

• All of the above.

Which animal is the apex predator?

• hawk
• lizard
• snake
• grass

Tags

NGSS.MS-LS2-4

Which animal is not the apex predator but, a predator to a mouse?

• hawk
• rabbit
• snake
• grass

Tags

NGSS.MS-LS2-2

Which of the following is a herbivore?

• cricket
• frog
• hawk
• shrew

Tags

NGSS.MS-LS2-3

An organism that obtains energy by eating other organisms.

• Consumer

• Producer

• Decomposer

• Detritivore

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-7

Use the diagram to answer the question.
The trout is a source of food for the human and the eagle. When there are more than one organism vying for the same source we call this____?

• Population
• Resources
• Community
• Competition

Tags

NGSS.MS-LS2-1

Bacteria, fungi, and earthworms are examples of: 

• scavengers
• predators
• prey
• decomposers

Tags

NGSS.MS-LS2-3

According to the graph, what is causing the deer population to decrease

• They got sick

• The wolf population is decreasing

• The wolf population increased

• They ran out of food

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Examine the graph below of two animal populations. Which animal must be the prey species?

• A

• B

Tags

NGSS.MS-LS2-1