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 the prey population decreases, the predator population ________

• Increases
• Decreases
• Stays the same

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NGSS.MS-LS2-4

Which ecosystem is more sustainable?

• Community 1

• Community 2

• Same

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NGSS.MS-LS2-4

"Clear-cutting" a forest means

• forest environments do not remain intact

• the cutting is not balanced by planting new trees

• forest resources are not being carefully managed

• all of the above

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What is an event that results in an outcome or a change?

• effect

• cause

• feature

• distribution

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NGSS.MS-LS2-4

It is estimated that half of the 10 million species of organisms on the planet live in the tropical rain forests. Deforestation of the rain forest causes the extinction of as many as 50,000 species per year. Clearing tropical rain forests causes the extinction of many species because

• plants and animals are exposed to high levels of carbon dioxide.

• pollution caused by humans increases the greenhouse effect.

• many unique habitats and ecosystems are being completely destroyed.

• destruction of the rainforest contributes to the depletion of the ozone.

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NGSS.MS-LS2-4

1) What would be a positive reason to genetically alter Fraser Fir trees in North Carolina to make them more resistant to rot?

• By producing crops that are frost resistant

• By making robots to replace large farm machines

• The population of fir trees would increase and grow healthier.

• By increasing the use of wind farms that produce electricity

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NGSS.MS-LS2-4

What is most likely to happen to moth populations in the picture shown?

• Light moths--hunted easily, dark moths--population increase

• Dark moths--hunted easily, dark moths--population increase

• Light moths--hunted easily, light moths--population increase

• Lights moths will change their color to match dark moths.

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NGSS.MS-LS2-4

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-LS2-4

Oil spill is a threat to organisms living in ..........................

• Forests

• Deserts

• Seas

• Plains

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NGSS.MS-LS2-4