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vocab. for DSST Env.Sci. from Environmental Science by Karen Arms

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Question
Answer
show self-feeding organism that obtains its nutrients by synthesis from the environment, such as green plants  
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carbon cycle   show
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show consumer that eats only other consumers  
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show process of breaking down food to yield energy  
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climax community   show
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show organisln that gets its energy by eating other organisms; heterotroph  
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show powerful insecticide; its use is limited by law because of its potential to damage the environment  
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show consumer that gets its food by breaking down dead organisms, causing them to rot  
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energy pyramid   show
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show communities where natural fires caused by lightning make secondary succession possible  
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food chain   show
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show diagram showing the feeding relationships between organisms in an ecosystem  
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show consumer that eats only producers  
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show consumer organism that gets its energy from eating other organisms  
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krill   show
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lichen   show
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show process by which atmospheric nitrogen is converted into compounds for use by plants and animals, eventually returned by decay  
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nitrogen-fixing bacteria   show
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omnivore   show
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perennial grass   show
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show biological synthesis of chemical compounds in the presence of light; produces organic substances such as sugar  
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show first organisms to colonize any newly available area and start the process of succession  
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precipitation   show
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primary succession   show
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show organism that makes its own food; autotroph  
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secondary succession   show
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succession   show
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trophic level   show
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show the continual process by which water circulates between the atmosphere and the Earth  
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show the quantity that describes the capacity to do work  
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