NGSS.MS-LS2-4

Which population would be most affected if there is a decrease in the population of aquatic insects?

• elk
• frog
• moose
• squirrel

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NGSS.MS-LS2-4

A builder is proposing a new housing development in an area of western Massachusetts. Construction of the housing development will destroy the wetland habitat in the area.
Which of the following would be the most likely consequence of the wetland’s destruction?

• The wetland plant species would disperse to adjacent meadow habitats.
• The populations of wetland animals would be unable to survive in that area.
• The wetland animal species would survive by interbreeding with non-wetland species
• The populations of wetland plants would evolve to disperse seeds by wind rather than water.

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NGSS.MS-LS2-4

Melting of glaciers and polar ice caps....

• will result in cooler temperatures in the Arctic
• will result in sea-levels rising
• Will have no effect on ecosystems
• None of the above

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NGSS.MS-LS2-4

Which is a biotic factor?

• sunlight
• air 
• bacteria
• all of the above

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NGSS.MS-LS2-4

Tornadoes can negatively affect an ecosystem when

• the saltwater they bring kills off burrowing insects
• their strong winds uproot many of the important plants
• the rise in water level they produce introduces harmful salt
• they bring higher temperatures favored by birds

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NGSS.MS-LS2-4

 Which biome is more likely to survive a change in the environment?

• High (rich) biodiversity
• Low (poor) biodiversity

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NGSS.MS-LS2-4

A wetland being drained so a housing development can be built is an example of ____________.

• habitat destruction

• over exploitation

• pollution

• conservation

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NGSS.MS-LS2-4

Which best describes a method of obtaining energy that may cause changes in water temperature and harm to fish populations?

• burning coal

• using ethanol in cars

• installing solar panels on a home

• generating electricity in a hydroelectric power plant

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NGSS.MS-LS2-4

A population of bluefish lives in the Gulf of Mexico. Over the last 50 years, the size of the bluefish population has decreased. What best explains the decrease in the size of the bluefish population?

• A lot of bluefish died and no new bluefish were born.

• Fewer bluefish were born than died.

• More bluefish were born than died.

• The bluefish population is always decreasing because bluefish are always being eaten.

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NGSS.MS-LS2-4

A population of mice lives in the northeastern United States. Over the last 50 years, the size of the mouse population decreased. What best explains the decrease in the size of the mouse population?

• Fewer mice were born than died.

• More mice were born than died.

• A lot of mice died and no new mice were born.

• The mouse population is always decreasing because mice are always being eaten.

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NGSS.MS-LS2-4