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| any abiotic factor or biotic factor that restrics the numbers, reproduction or distribution of organisms |
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| the ability of an organismnto survive when subjected to abiotic factors or biotic factors |
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| a group of interacting populations that occupy the same area at the same time |
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| the chanage in an ecosystem that happens when one community replaces another as a result of changing abiotic and biotic factors |
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| the establishment of a community in an area of exposed rock that does not have topsoil |
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| the stable, mature community that results when there is little change in the composition of species |
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| the orderly and predictable change that takes place after a community of oraganisms has been removed but the soil has remained intact |
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| the condition of the atmosphere at a specific place and time |
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| the distance of any point on the surface of Earth north or south from the equator |
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| the average weather conditions in a area, including temperature and precipitation |
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| a treeless biome witha layer of permanently frozen soil below the surface called permafrost |
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| (northern coniferous forest)a broad band of dense evergreen forest south of the tundra |
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| composed mostly of broad-leaved, deciduous trees, in which all four seasons occur |
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| contain wooland and shrubs and are found in areas with less annual rainfall than the temperate forest |
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| a biome characterized by fertile soils that are able to support a thick cover of grasses |
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| any area in which the annual rate of evaporation exceeds the rate of precipitation |
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| biome characterized by grasses and acattered trees in clamates that receive less precipitation than othe tropical areas |
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| tropical seasonal forests |
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| biome resembles the temperate deciduous forest because during the the dry season, almost all the trees drop their leaves to conserve water |
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| biome characterized by warm temperatures and large amounts of rainfall throughout the year |
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| material that is deposited by water, wind, or glaciers |
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| the area of a lake or pond closest to the shore |
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| open water area of a pond or lake that is well lit and is dominated by plankton |
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| free-floating photosynthetic autotrops that live in freshwater or amrine ecosystems |
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| the deepest areas of a large lake |
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| areas of land such as marshes, swamps, ans bogs that are saturated with water and support aquatic plants |
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| an ecosystem tat is formed where freshwater from a river or stream merges wit saltwater from the ocean |
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| a narrow band where the ocean meets the land |
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| the area to the depth of about 200m of the pelagic zone |
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| below the photic zone, where sunlight is unalbe to penetrate |
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| area along te ocean floor that consists of sand, silst, and dead organisms |
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| the deepest region of the ocean |
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