NGSS.MS-LS2-4

Prairie dogs rely on underground tunnels for shelter. Which bestexplains how the prairie dog population is affected when their tunnels are disrupted and exposed?

• The prairie dogs are burned by the sun.
• The prairie dogs are exposed to predators
• The prairie dogs can find more food to eat in the fields
• The prairie dogs are forced to learn to live in trees and shrubs

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NGSS.MS-LS2-4

If wolves prey on deer for food, what will MOST LIKELY happen to the deer population  if wolves are removed from an area where deer live?

• The population of deer will increase
• The population of deer will decrease.
• The population of deer will remain the same.
• The population of deer will become extinct.

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NGSS.MS-LS2-4

When the amount of predators in an area increases, the number of prey

• Stays the same
• Decreases
• Increases
• Increases and decreases constantly

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NGSS.MS-LS2-4

Why is the mouse population changing over time?

• The light mice can reproduce more successfully than the dark mice
• The hawks eat more dark mice than light mice because the dark mice taste better
• The hawks eat more light mice than dark mice because they can see the light mice more easily
• The hawks eat more dark mice than light mice because they can see the dark mice more easily

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NGSS.MS-LS2-4

Moderate rainfall, covered in mostly grass, medium biodiversity

• Tundra

• Desert

• Grassland

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NGSS.MS-LS2-4

The ocean ecosystem has a high sustainability because of

• strong, persistent currents

• predator/prey relationships

• green plants growing on the bottom

• the large variety of different organisms

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NGSS.MS-LS2-4

Which of the following best describes what will happen to the beetle population in this environment?

• The green beetle will be captured more easily by the predators and the brown population will survive and reproduce

• The brown beetle will be captured more easily by the predators and the green population will survive and reproduce

• The green population will increase because there are not enough present in the population

• The population will remain the same until a better adaptation comes along

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NGSS.MS-LS2-4

Many fish die due to a drastic change in water temperature.

• Density-Dependent

• Density-Independent

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NGSS.MS-LS2-4

Which BEST explains what would happen if decomposers disappeared in an ecosystem?

• everything would stop functioning immediately.

• everything would function normally.

• the ecosystem would become cleaner

• the ecosystem would be overrun with dead matter.

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NGSS.MS-LS2-4

Which of the following events is most likely to cause an environmental disturbance in a grassland biome?

• earthquake

• volcanic eruption

• hurricane

• fire caused by lightning

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NGSS.MS-LS2-4