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science flashcards of 9 terms

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Question
Answer
Food Chain   an illustration of how food moves through an ecosystem  
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Food Web   a model more complex than a food chain that describes moves through an ecosystem  
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Primary Consumer   an organism that eats producers  
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Secondary Consumer   an organism that eats herbivores  
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Tertiary Consumer   organism, such as a predator, at the top of the energy pyramid  
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Nitrifying Bacteria   a type of soil bacteria that can change nitrogen in the atmosphere to a form plants can take up through their roots  
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Nitrogen Cycle   the process in which nitrogen moves from the atmosphere to the soil, to living organisms, and back into the atmosphere  
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Phosphorous Cycle   the process through which phosphorous moves from soil to producers and consumers and back to soil  
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Carbon Cycle   the process through which carbon moves between the living and nonliving environment  
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