Populations and Resources - Study Guide

An ecosystem is made up of __________________ and non-living things.

• Plants

• Animals

• Living

• Water

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True or False: A system can be stable even as things are being added to and removed from it.

• True

• False

A __________________ population is the population that gets eaten by others.

• Predator

• Consumer

• Resource

• Producer

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An organism is best defined as:

• Many individuals of the same species living in the same area.

• All of the living and nonliving things in a particular area.

• An individual plant, animal, fungus, or single-celled life form.

• A creature that is large enough to see without using a microscope.

True or False: The less energy storage molecules available to a population, the more the organisms within the population can reproduce.

• True

• False

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If the consumer population decreases, then the resources population will __________.

• decrease

• increase

• remain the same

• disappear

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If a population is decreasing, then this means there are __________ births than __________.

• more, deaths

• fewer, deaths

• more, resources

• fewer, resources

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If a population is increasing, then this means there are __________ births than __________.

• more, deaths

• fewer, deaths

• more, resources

• fewer, resources

When 2 or more populations use the same resource, such as a food source, they are in __________________________.

• cooperation

• competition

• isolation

• migration

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How would an increase in the opossum population affect the fox population?

• Increase the fox population

• Decrease the fox population

• No effect on the fox population

• Cause the fox population to migrate

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