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Autotroph

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Organisms that produce their own food from inorganic substances.

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Primary producer

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Organisms in an ecosystem that produce biomass from inorganic compounds.

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Photosynthesis

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Process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

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Chemosynthesis

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The process by which some organisms use chemical energy to produce carbohydrates.

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Heterotrophs

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Organisms that cannot produce their own food and rely on consuming other organisms.

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Consumers

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Organisms that obtain energy by feeding on other organisms.

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Carnivores

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Animals that primarily eat other animals.

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Scavengers

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Animals that consume dead organisms that have died from causes other than predation.

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Herbivores

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Animals that primarily eat plants.

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Omnivores

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Animals that eat both plants and animals.