NGSS.MS-LS2-4

A variety of animals and plants can be found at the Grand Canyon because of the differences in the the water amounts, elevation, and climate.

• True

• False

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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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NGSS.MS-LS2-4

Many common products, such as wooden furniture, paper, and books, are made from trees. Which of the following is a likely consequence of humans cutting down a forest in order to make use of the natural resources there? 

• the decrease of chemical runoff into the oceans
• increased acid rain
• the increase of light pollution in cities
• the destruction of habitats

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NGSS.MS-LS2-4

An endangered species in South Florida is the Miami Blue Butterfly. Which factor has MOST likely caused the population of this butterfly to decline?

• the increase of parks.

• the decline of seawater.

• the increase of homes being built.

• decline of predators.

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NGSS.MS-LS2-4

Which of the following best describes primary succession?

• Volcano wipes out ecosystem that gradually grows back from ash covered soil

• Volcano creates a new island of rock that must break down to form an ecosystem

• Forest fire burns down forest that must bounce back over time

• Tornado destroys a crop that must slowly grow back over time.

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NGSS.MS-LS2-4

Lions and cheetahs prey on wildebeests that graze in the grasslands of the African savanna. What likely effect would increased rainfall over several rainy seasons have on the populations of wildebeests, lions, and cheetahs?

• All three populations would increase.

• The wildebeest population would decrease, and the lion and cheetah populations would increase.

• The wildebeest population would increase, and the lion and cheetah populations would decrease.

• All three populations would decrease.

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NGSS.MS-LS2-4

Which of these would have an effect on the populations in a forest? (pick 3)

• Building a shopping center

• Drought (low rainfall for a long time)

• Forest fire

• A rainy day

• Warm sunny days

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NGSS.MS-LS2-4

If a lake has excess levels of phosphates and nitrates in its water, what will most likely result?

• The temperature of the lake water will decrease.

• The turbidity levels of the lake will decrease.

• The dissolved-oxygen levels in the lake will increase.

• The growth of algae in the lake will increase.

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NGSS.MS-LS2-4

Changes to an environment may make it more difficult for an organism to find-

• food.

• shelter.

• water.

• all of the above

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NGSS.MS-LS2-4

The arctic hare in the picture is shown camouflaged in the snow from possible predators.

What would happen if the arctic hare was introduced into a new environment without snow and ice?

• The species would become overpopulated.

• The chance of young hares surviving to adulthood and reproducing would be greatly diminished.

• The hare would be a popular target for game hunters.

• All of the above.

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NGSS.MS-LS2-4