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Ecosystems Vocab

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Across
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All organisms of the same species living in an environment.
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Study of interactions among organisms.
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Factor: A nonliving factor.
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An organism that helps break down organic material.
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A geographic area on Earth that contains ecosystems.
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All the living and nonliving parts of an environment.
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All the populations living together in an environment.
Down
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Shows one feeding relationship in an ecosystem.
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An organism that produces its own food.
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The gradual change from one community to another community.
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Any variation that makes an organism better suited for its environment.
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Shows all the possible feeding relationships in an ecosystem.
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An organism that eats other organisms for food.
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Factor: A living factor.
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Pyramid: A model that shows the amount of energy in food chains.
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Place where an organism lives.