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Ecosystem

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Term
Definition
ecosystem   all the living and nonliving things in an area that interact with each other  
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autotroph   any organism that can create its own food from inorganic materials  
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heterotroph   an organism that cannot create its own energy and must instead rely on consuming nutrients from other organisms  
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producers   an organism that makes its own food; an organism that does not consume other plants or animals  
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primary consumers   (in the food chain) an animal that feeds on plants  
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secondary consumers   (in the food chain) a carnivore that feeds only upon herbivores.  
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decomposers   organisms which carry out the process of decomposition by breaking down dead or decaying organisms  
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herbivores   an animal that consumes only plants  
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carnivores   an animal that eats only other animals  
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omnivores   an animal that eats plants as well as other animals  
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population   the group of organisms of the same species living in the same area  
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community   a group of different populations that live together and interact in an environment  
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density   an object's mass divided by its volume; a measure of how many particles are packed together into a certain amount of space  
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limiting factor   an environmental factor that tends to limit population size.  
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food chain   a model that shows one set of feeding relationships among living things  
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food web   a model that shows many different feeding relationships among living things  
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predator   an animal that hunts and eats another animal  
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prey   an animal that is hunted and eaten by another animal  
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organism   any individual living thing  
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succession   a number of persons or things following one another in order or sequence.  
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energy pyramid   a model that shows the available amount of energy in each trophic layer in an ecosystem  
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competition   the rivalry offered by a competitor  
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mutualism   a relationship between two species of a plant, animal, or fungus in which one lives off the other and both organisms benefit  
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symbiosis   the living together of two dissimilar organisms, as in mutualism, commensalism, or parasitism.  
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coexistence   to exist together or at the same time.  
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cooperation   an act or instance of working or acting together for a common purpose or benefit; joint action.  
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primary succession   The ecological succession of plant and animal communities in a disturbed area where no topsoil exists, as on a new lava flow.  
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secondary succession   The ecological succession of plant and animal communities in a disturbed area where topsoil has been retained, as in an area that has been recently burned by fire.  
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Terrestrial   relating to the earth or those who live there.  
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taiga   a large naturally occurring area of land with largely evergreen forest vegetation found in northern sections of the Northern Hemisphere  
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tundra   extremely cold climate located near the North and South Poles and on the tops of mountains; receives very little precipitation and has no trees  
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deciduous forest   a forest containing trees that lose their leaves each year  
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grasslands   an area of land covered mostly with grass with few bushes or trees  
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tropical rain forests   A forest with high rate of precipitation and high humidity, usually located near the equator.  
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deserts   an area that gets little precipitation and has very little vegetation  
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aquatic   relating to water  
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Created by: rany22m
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