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Ecosystems & Interactions

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Term
Definition
environment   All the living and nonliving things that surround and affect an organism.  
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ecosystem   A community of organisms and the physical environment in which they live.  
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population   All the organisms of the same kind that live together in an ecosystem.  
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habitat   The place where an organism lives and can find everything it needs to survive.  
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community   All the populations of organisms that live and interact in an area.  
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producer   A living thing, such as a plant, that can make its own food.  
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consumer   A living thing that cannot make its own food and must eat other living things.  
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photosynthesis   The process in which plants use energy from the sun to change carbon dioxide and water into sugar and oxygen.  
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decomposer   A living thing that gets energy by breaking down dead organisms and animal wastes.  
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food chain   A series of organisms that depend on one another for food.  
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