Ecosystem Interactions Review

Analyze the data below showing the population of rabbits in a forest over five years. What can you infer about the availability of resources in the forest? | Year | Rabbit Population | |------|-------------------| | 1 | 200 | | 2 | 250 | | 3 | 300 | | 4 | 350 | | 5 | 400 |

• Resources have decreased, leading to a decline in population.

• Resources have remained constant, leading to a stable population.

• Resources have increased, leading to a growth in population.

• Resources have fluctuated, leading to an unstable population.

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OK.SCI.7.LS2.1

What is the primary source of energy for most ecosystems?

• Water

• Sunlight

• Soil

• Wind

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OK.SCI.7.LS2.3

Which of the following interactions is an example of mutualism?

• A lion hunting a zebra

• A bee pollinating a flower

• A cat chasing a mouse

• A bird eating a worm

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OK.SCI.7.LS2.2

Construct an explanation for how the introduction of a new predator in an ecosystem might affect the existing populations.

• It will have no effect on the existing populations.

• It will increase the population of prey species.

• It will decrease the population of prey species.

• It will lead to the extinction of all species.

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OK.SCI.7.LS2.4

Which of the following best describes the cycling of matter in an ecosystem?

• Matter is created and destroyed.

• Matter is recycled between living and nonliving components.

• Matter flows in one direction and is lost.

• Matter is only found in living organisms.

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OK.SCI.7.LS2.3

Evaluate the following design solutions for maintaining biodiversity: 1) Creating wildlife corridors, 2) Building more roads, 3) Establishing protected areas. Which solution is most effective?

• Creating wildlife corridors

• Building more roads

• Establishing protected areas

• None of These

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What is the role of decomposers in an ecosystem?

• They produce energy from sunlight.

• They break down dead organisms and recycle nutrients.

• They compete with plants for sunlight.

• They hunt and eat other animals.

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OK.SCI.7.LS2.3

Analyze the following scenario: A forest fire has destroyed a large area of a forest. What is the likely immediate effect on the animal populations in that area?

• Increase in animal populations

• Decrease in animal populations

• No change in animal populations

• Animals will become more diverse

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OK.SCI.7.LS2.4

Which of the following is an example of a nonrenewable resource?

• Solar energy

• Wind energy

• Coal

• Water

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OK.SCI.7.LS2.1

Construct an argument supported by evidence: How does deforestation affect the carbon cycle?

• It increases carbon storage in trees.

• It decreases carbon dioxide in the atmosphere.

• It increases carbon dioxide in the atmosphere.

• It has no effect on the carbon cycle.

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OK.SCI.7.LS2.4