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Semester Exam Review pg 4

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
intestines   Bacteria live in our _____________ and produce Vitamin K.  
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plants/animals   Bacteria break down dead _________ and ___________. (decomposers)  
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oil spills   Bacteria can be used to clean up _____ ________.  
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nitrogen   Bacteria change ___________ from air to forms that plants can use.  
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Respiration   organisms use oxygen to get energy from food, some of which is released as heat.  
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Oxygen + glucose (Raw products)   carbon dioxide + water + energy (heat) (Products)  
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cellular respiration   All organisms must carry out ________ ___________ to perform its functions to survive.  
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sun   The _______ supplies the energy for most life on Earth.  
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Producers   make their own food (photosynthesis; plants)  
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producers   All food chains and food webs start with ___________.  
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consumers   must eat other consumers (meat eaters)  
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herbivores   eat plants  
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carnivores   eat other consumers (plants and animals)  
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decomposers   break down dead organisms  
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scavengers   eat dead organisms  
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food chain   a model, a simple way of showing how energy passes from one organism to another  
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food web   is a series of overlapping food chains that exist in an ecosystem  
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ecosystems   are all the organisms living in an area and the nonliving parts of an environment  
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biome   is a large geographic area with similar climate and ecosystems  
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population   all the organisms of the same speices that live in that area at the same time  
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habitat   the place where an organism lives  
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community   the population of all species living in an ecosystem  
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mutualism   both species benefit  
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commensalism   one organism benefits and the other one is not affected  
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parasitism   one organism benefits and the other is harmed  
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niche   how an organism obtains food, shelter, finds a mate, cares for its young, and avoids danger  
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Created by: mgrant
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