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Definition
| organism that uses energy from the sun or energy stored in chemical compounds to manufacture their own nutrients |
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Definition
| the total mass or weight of all living matter in a given area |
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Definition
| organisms, such as fungi and bacteria, that break down and absorb nutrients from dead organisms |
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Term
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Definition
| simple model that shows how matter and energy move through an ecosystem |
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Definition
| simple model that shows all the possible feeding relationships at each trophic level in a community |
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Definition
| organisms that cannot make their own food and must feed on other organisms for energy and nutrients |
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Term
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Definition
| organism that represents a feeding step in the movement of energy and materials through an ecosystem |
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