NGSS.MS-LS2-4

A rainforest area is experiencing a severe drought. As a consequence, the insect population has decreased. What will the insect-eating birds most likely do as a result of the drought?

• stop searching for food until it begins to rain
• begin reproducing to increase population
• move to a new area to find food
• start the process of hibernation

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NGSS.MS-LS2-4

After the Aswan High Dam was built on the Nile River, the rate of parasitic blood-flukeinfection doubled in the human population near the dam. As a result of building the dam, the flow of the Nile changed. This changed the habitat, which resulted in an increase in its population of a certain aquatic snail. The snails, which were infected, released larvae of the fluke. These larvae then infected humans. This situation best illustrates that:

• the influence of humans on a natural system is always negative in the long term
• the influence of humans on a natural system can have unpredictable negative impacts
• human alteration of an ecosystem does not need to be studied to avoid ecological disaster
• human alteration of an ecosystem will cause pollution and loss of finite resources

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NGSS.MS-LS2-4

What are some consequences of deforestation?

• increased population in cities
• building of more infrastructure
• soil erosion, loss of biodiversity, loss of ability to remove CO2
• more mercury and cyanide released into rivers

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NGSS.MS-LS2-4

Which of the following is an abioitic factor that could affect biotic factors?

• Population of rabbits.

• Length of daylight.

• Presence of harmful bacteria.

• Number of herbivores.

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NGSS.MS-LS2-4

A species could go extinct if:

• food becomes more plentiful.

• members of the species have adaptations to enhance survival.

• the environment changes drastically and no one can adapt.

• there is less competition for resources.

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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

The population of deer in a certain area is monitored over a period of six years. The data is represented in the graph provided. Which of the following is the most likely explanation for the change in population in 2009?

• Wild dogs, which prey on deer, were being hunted more than usual.

• Snowfall in the previous spring was higher than the yearly average.

• Humans introduced grazing animals that feed on the same plants as the deer.

• More insects that pollinate flowering plants move into the ecosystem.

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NGSS.MS-LS2-4

evidence

• information about the natural world that is used to support or go against (refute) a claim
• a proposed answer to a question about the natural world
• the process of making clear how your evidence supports your claim
• a claim supported by evidence

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NGSS.MS-LS2-4

Who studies the effects of the environment on animal life?

• Soil Technician

• Wildlife Technician

• Wildlife Manager

• Ecologist

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NGSS.MS-LS2-4

Why did the population of peppered moths in England change from light to dark after the Industrial Revolution?

• Light moths were easy to see against blackened sooty trees and were eaten

• Light moths were killed by soot

• The birds that ate the dark moths were killed by soot

• Dark moths were produced by industrial processes

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NGSS.MS-LS2-4