Investigation 1 Populations and Ecosystems

Which statement BEST explains the flow of energy as it moves through the different levels?

• Energy decreases as it is lost as heat to the environment.

• Energy increases as it is gained from the environment.

• Energy is unavailable because it is used up by the organisms at Level 1.

• Energy is transferred as it is produced by organisms in the next level.

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NGSS.MS-LS2-3

What impact do resources, such as sunlight and water, have on a forest ecosystem?

• They limit the carrying capacity of the ecosystem.

• They increase habitat areas for new organisms entering the ecosystem.

• They decrease the number of diseases resulting from overpopulation.

• They alter the rate of photosynthesis, resulting in more oxygen being produced.

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NGSS.MS-LS1-6

NGSS.MS-LS2-1

A relationship that describes a close interaction between two different species is known as what?

• Biodiversity

• Population

• Symbiosis

• Emigration

Changes to abiotic factors in an environment can impact biotic factors. Which statement is the BEST example of this situation?

• Heavy rainfall increases soil erosion.

• Melting glaciers cause sea levels to rise.

• Cold temperatures cause rocks to weather.

• Drought conditions increase competition among consumers.

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NGSS.MS-LS2-1

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NGSS.MS-LS2-4

Dead matter and waste would pile up without which type of organism?

• decomposer

• consumer

• producer

A pride of lions stalks, tackles, and kills an antelope. Which is best being demonstrated?

• predation

• mutualism

• cooperation

Which best describes mutualism?

• Ticks live and feed on dogs and other animals’ blood to survive.

• Mushrooms send out long, underground structures which allow them to grow in other areas.

• Ants attack animals that try to feed on the acacia tree, and the ants feed on the nectar of the tree.

Tags

NGSS.MS-LS2-2

The nonliving physical environment of an ecosystem is the __________ component.

• abiotic

• biotic

• diverse

• living

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NGSS.MS-LS2-3

A community of organisms living together with their physical environment is a(n)

• biome

• biosphere

• ecosystem

• atmosphere

This is the study of interactions between organisms and the interactions that organisms have with their environment.

• Evolution

• Ecology

• Biology

• Commensalism

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NGSS.MS-LS2-2

NGSS.MS-LS2-3

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