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BiologyCh4Vocab

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
aphotic zone   dark layer of the oceans below the photic zone where sunlight does not penetrate  
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benthos   organisms that live attached to or near the bottom of lakes, streams or oceans  
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climate   average year-to-year conditions of temperature and precipitation in an area over a long period of time  
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commensalism   symbiotic relationship in which one organism benefits, but the other organism is neither helped nor harmed  
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competitive exclusion principle   principle that states that no two species can occupy the same niche in the same habitat at the same time  
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ecological succession   series of gradual changes that occur in a community following a disturbance  
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estuary   kind of wetland formed when a river meets an ocean  
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greenhouse effect   process in which certain gases (carbon dioxide, methane and water vapor) trap sunlight energy in the Earth's atmosphere  
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habitat   area where an organism lives, including the biotic and abiotic factors that affect it  
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herbivory   interaction in which one animal (the herbivore) feeds on producers(such as plants)  
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keystone species   single species that is not usually abundant in a community yet exerts strong control on the structure of the community  
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microclimate   environmental conditions within a small area that differ significantly from the climates of the surrounding areas  
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mutualism   symbiotic relationship in which both species benefit from the relationship  
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niche   full range of physical and biological conditions in which an organism lives and the way in which an organism uses those conditions  
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parasitism   synbiotic relationship in which one organism lives on or in another organism and harms it  
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photic zone   sunlit region near the surface of the water  
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pioneer species   first species to populate an area during succession  
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plankton   microscopic organisms that live in aquatic environments; includes phytoplankton and zooplankton  
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predation   interaction in which one organism (the predator) captures and feeds on another organism (prey)  
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primary succession   sucession that occurs inan area in which no trace of a previous community is present  
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resource   any necessity of life, such as water, light, food or space  
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secondary succession   type of succession in an area that was only partially destroyed by disturbances  
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symbiosis   relationship in which two species live close together  
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tolerance   ability of an organism to survive and reproduce under circumstances that differ from their optimal conditions  
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weather   day-to-day conditions of the atmosphere including temperature, precipitation and other factors  
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wetland   ecosystem in which water either covers the soil or is present at or near the surface for at least part of the year  
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