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Matter and Energy Flow

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Across
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a living organism without the power to move
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a process in which one substance permeates another
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that part of the energy in a substance that can be released by a chemical reaction
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the process by which the body breaks down food
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an animal that feeds on both animal and vegetable substances
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any substance that can be metabolized to give energy
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a substance formed by chemical union of two or more elements
Down
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a living organism characterized by voluntary movement
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photosynthetic or plant constituent of plankton
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a terrestrial or aquatic flesh-eating mammal
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an organic compound essential to living cells
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any substance that can be metabolized by an animal
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any animal that feeds primarily on grass and other plants
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a living thing that can act or function independently
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changing gradually from a simple to a more complex level