Competition in Ecosystems

Eagles and grizzly bears live together in the same habitat. There will be competition between the eagles and the grizzly bears only if which of the following is true?

• Grizzly bears hibernate during the winter while eagles remain active.

• Pesticides in the fish population affect eagles' eggs and decrease their population.

• Both grizzly bears and eagles feed on the same species of salmon.

• Laws prevent humans from being able to hunt eagles or grizzly bears.

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NGSS.MS-LS2-4

An increase in which of the following factors is likely to contribute to competition between two members of the same species living in a certain habitat?

• Available food resources

• Population of the species

• Annual rainfall

• Overall size of the habitat

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Two species of fish live in the same pond. They eat the same kinds of plants. They are eaten by the same water birds. Which of the following would increase competition between these two species of fish?

• Average habitat temperature increases.

• Population of water birds increases.

• Number of food plants decreases.

• Water level in the pond increases.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

A virus that kills blueberries ultimately causes the local population of wolves to drop.  This is called:

• competition

• ripple effect

• predator-prey relationship

• exponential growth

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

For a given species, which of these is NOT likely to be impacted by the availability of resources?

• Competition

• Rate of reproduction

• Health and/or growth of individuals

• Adaptations

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NGSS.MS-LS2-1

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NGSS.MS-LS1-5

The relationship between foxes and wolves can be described as

• Competitive

• Indirectly Dependent

• Directly Dependent

The relationship between hawks and plants is

• Competitive

• Directly Dependent

• Indirectly Dependent

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NGSS.MS-LS2-2

An _______ is an organism that causes ecological or economic harm in a new environment where it is not native.

• Invasive Species

• Non-Native Species

• Indigenous species

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NGSS.MS-LS2-2

An _______ is a special feature that allows organisms to live successfully in a particular area.

• Adaptation

• Mutation

• Resource

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A ______ is an Organism that uses an outside energy source to make energy-rich molecules.

• Producer

• Primary Consumer

• Secondary Consumer

• Apex Predator

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NGSS.MS-LS1-6