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Prep. for Test

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
biotic factors   living parts of the environment  
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abiotic factors   non-living parts of the environment  
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producer/autotroph   makes food through photosynthesis  
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consumer/heterotroph   consumes other organisms  
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decomposer   breaks down dead/decaying organisms and returns nutrients to soil  
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herbivore   eats only plants  
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carnivore   eats only animals/meat  
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omnivore   eats plants and animals/meat  
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scavenger   eats dead plants and animals  
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food chain   shows how matter and energy move through an ecosystem in a series of steps showing which organisms transfer energy by eating and being eaten  
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food web   model that shows all the possible feeding relationships at each trophic level in a community; links all food chains in an ecosystem together  
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sun's role in food chain/web   ultimate source of energy for all living things  
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energy pyramid   a triangular diagram that shows an ecosystem's loss of energy; each row in the pyramid represents a trophic (feeding) level in an ecosystem, and the area of a row represents the energy stored in that trophic level  
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symbiosis   a close relationship between two species that benefits at least one of the species  
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mutualism   a relationship in which both species benefit  
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commensalism   a relationship in which one species benefits and the other species is neither helped nor harmed  
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parasitism   involves one organism living on or inside another organism and harming it  
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predator/prey   the predator is an organism that eats another organism and the prey is the organism being eaten  
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competition   the relationship between two species (or individuals) in which both species (or individuals) attempt to use the same limited resource such that both are negatively affected by the relationship  
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adaptation   the process of becoming adapted to an environment; an anatomical, physiological, or behavioral change that improves a population's ability to survive  
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Created by: letinaanh
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