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| organism that is able to 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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| first producer of energy-rich compounds that are later used by other organisms |
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| process used by plants and other autotrophs to capture light energy and use it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches |
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| process in which chemical energy is used to produce carbohydrates |
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| organism that obtains food by consuming other living things; also called a consumer |
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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 obtains energy by eating animals |
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| organism that obtains energy by eating only plants |
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| animal that consumes the carcasses of other animals |
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| organism that obtains energy by eating both plants and animals |
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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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