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| organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer |
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| group of ecosystems that have the same climate and dominant communities |
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| part of Earth in which life exists including land, water, and air or atmosphere |
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| animal that consumes other animals |
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| type of symbiotic relationship in which one member of the association benefits and the other is neither helped nor harmed |
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| assemblage of different populations that live together in a defined area |
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| organism that relies on other organisms for its energy and food supply; also called a heterotroph |
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| organism that breaks down and obtains energy from dead organic matter |
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| organism that feeds on plant and animal remains and other dead matter |
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| scientific study of interactions among organisms and between organisms and their environment |
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| collection of all the organisms that live in a particular place, together with their nonliving environment |
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| series of steps in an ecosystem in which organisms transfer energy by eating and being eaten |
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| network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem |
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| animal that feeds on plants |
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| organism that obtains energy from the foods it consumes; also called a consumer |
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| a symbiotic relationship in which both organisms benefit |
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| full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions |
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| animal that consumes both plants and animals |
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| a symbiotic relationship in which one organism benefits and the other is harmed |
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| group of individuals of the same species that live in the same area |
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| organism that can capture energy from sunlight or chemicals and use it to produce food from inorganic compounds; also called an autotroph |
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| relationship in which two species live closely together |
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