Ecosystem Terminology

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Organisms

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Living things, including animals, plants, fungi, and microorganisms.

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Populations

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A group of organisms of the same species living in a specific area.

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Predator

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An organism that hunts and eats other organisms for food.

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Prey

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An organism that is hunted and consumed by a predator.

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Energy

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The ability to do work; in ecosystems, energy flows from the sun through producers and consumers.

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Matter

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Anything that has mass and takes up space; cycles through ecosystems in different forms.

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Resource

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A substance or factor required by an organism to survive, such as food, water, and shelter.

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Availability

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The presence or accessibility of a resource within an environment.