Understanding Population Distribution Patterns

Which pattern describes a population that is distributed evenly across an area?

• Clumped distribution

• Uniform distribution

• Random distribution

• Clustered distribution

What is the primary factor that affects the carrying capacity of an ecosystem?

• The number of predators

• Availability of resources

• The size of the ecosystem

• The number of species

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is an abiotic factor that can influence population density?

• Predation

• Temperature

• Competition

• Parasitism

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How do biotic factors differ from abiotic factors in an ecosystem?

• Biotic factors are non-living, while abiotic factors are living.

• Biotic factors include living organisms, while abiotic factors include non-living elements.

• Biotic factors are chemical, while abiotic factors are physical.

• Biotic factors are constant, while abiotic factors change frequently.

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Which of the following best describes the relationship between an ecosystem and a habitat?

• An ecosystem is a specific type of habitat.

• A habitat is a specific type of ecosystem.

• A habitat is the physical environment where an organism lives, while an ecosystem includes the interactions between organisms and their environment.

• An ecosystem is the physical environment, while a habitat includes interactions between organisms.

What is the role of carrying capacity in maintaining ecosystem balance?

• It limits the number of species in an ecosystem.

• It determines the maximum population size that an environment can sustain.

• It increases the biodiversity of an ecosystem.

• It reduces the competition among species.

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NGSS.MS-LS2-4

Which of the following is a characteristic of a clumped population distribution?

• Individuals are evenly spaced.

• Individuals are randomly distributed.

• Individuals are grouped in patches.

• Individuals are isolated from each other.

How does competition affect population density?

• It increases population density by promoting cooperation.

• It decreases population density by limiting resources.

• It has no effect on population density.

• It stabilizes population density by balancing resource use.

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NGSS.MS-LS2-1

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Which of the following is an example of a biotic interaction in an ecosystem?

• Sunlight affecting plant growth

• Water availability influencing fish populations

• Predation of rabbits by foxes

• Soil composition affecting plant types

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NGSS.MS-LS2-2

What is the primary difference between a habitat and an ecosystem?

• A habitat includes only living organisms, while an ecosystem includes both living and non-living components.

• A habitat is a smaller part of an ecosystem, focusing on the living conditions of a species.

• An ecosystem is a smaller part of a habitat, focusing on the interactions between species.

• A habitat and an ecosystem are the same, with no differences.