NGSS.MS-LS2-1

What is the first thing that would happen in this food chain if the grass died?
Sun -> Grass -> Mouse -> Snake -> Hawk

• The snake population would increase
• the mouse population would increase
• the mouse population would decrease
• the hawk population would decrease

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NGSS.MS-LS2-1

In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

• Squirrel Population
• Sunlight
• Grass available

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NGSS.MS-LS2-1

Which is the most significant limiting factor in a desert ecosystem?

• nutrients
• predators
• sunlight
• water

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NGSS.MS-LS2-1

Factors like predation can have a positive benefit to the population of prey organisms because predators tend to keep prey populations below their ___________.

• carrying capacity

• sustainibility number

• exponential growth point

• competition level

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NGSS.MS-LS2-1

A ____________________ Relationship is when two living things "fight" for limited resources.

• Dependent

• Competitive

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NGSS.MS-LS2-1

This diagram shows the variety of organisms that live in different tide zones. Mussels are common organisms that compete for space in intertidal (middle) tide zones. If all of the mussels were removed from zone A, which organisms would likely compete for the space in Zone A?

• Periwinkle and Limpets

• Sea lettuce and Chiton

• Sea urchins and Hermit crabs

• Rock louse and Periwinkle

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NGSS.MS-LS2-1

Who could be affected if the number of birds decreased?

• only the birds

• only the grasshoppers and grains

• only the foxes

• all of the organisms shown

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NGSS.MS-LS2-1

What is happening to the biodiversity of the aquatic ecosystem as a result of the Great Barrier Reef dying?

• Increased

• Decreased

• Stayed the same

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NGSS.MS-LS2-1

If a population of gazelle decrease, the population of cheetahs will...

• Decrease

• Increase

• Stay the same

• Cheetahs don't eat gazelle

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NGSS.MS-LS2-1

One factor that drives population changes is

• the availability of resources.
• predation.
• both a and b.
• none of the above.

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NGSS.MS-LS2-1