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AP Bio Chapter 50

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Ecology   The study of how organisms interact with their environment.  
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Abiotic Components   Nonliving chemical and physical factors  
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Biotic Components   Living factors  
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Organismal Ecology   The behavioral, physiological, and morphological ways in which individual organisms meet the challenges posed by their abioticenvironment  
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Population   A group of individuals of the same species living in a particular geographic area  
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Community   All organisms that inhabit a particular area  
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Ecosystem   All abiotic factors in addition to the community of species that exists in a certain area  
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biosphere   The global ecosystem  
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Environment   Biotic and abiotic factors  
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Interactions   How organisms are affected by their environment or how they sometimes change their environment  
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Ecological time/ Evolutionary time   Ecological events over a set scale of time  
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Major Abiotic Factors   Temperature, Water, Sunlight, Wind, Rocks and Soil, and Periodic Disturbances  
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Climate and the Distribution of Organisms   The climate affects the distribution of organisms due to prevailing weather conditions  
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Climate   The prevailing weather conditions of a locality  
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Biome   The major types of ecosystems  
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Correlation vs. Causation   Relationship of data rather than cause and effect  
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Turnover   Mixing of lake water levels due to changing seasons  
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Photic Zone   Where there is sufficient light for photosynthesis  
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Aphotic Zone   Where little light penetrates  
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Thermocline   A narrow stratum of rapid temperature change  
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Benthic Zone   The bottom of all aquatic biomes  
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Benthos   Organisms inhabiting the benthic zone  
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Detritus   Dead organic matter eaten by benthos  
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Littoral Zone   Shallow, well-lit waters close to shore  
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Limnetic Zone   Well-lit, open waters farther from shore  
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Profundal Zone   Below the Limnetic Zone and above the Benthic Zone  
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Oligotrophic   Deep, nutrient-poor lakes  
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Eutrophic   Shallow lakes high in nutirents  
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Mesotrohic   In between Eutrophic and Oliogotrophic  
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Wetland   An area covered with water that supports aquatic plants  
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Estuary   Where a freshwater stream or river merges with the ocean  
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Intertidal Zone   Where land meets water  
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Nertic Zone   Beyond the Intertidal Zone, over the continental shelf  
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Oceanic Zone   Area past the continental shelf  
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Pelagic Zone   Open water of any depth  
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Benthic Zone   Sea floor  
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Coral Reefs   Area dominated by structures of coral  
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Oceanic Pelagic Biome   Ocean water far from shore, made up of constantly mixed ocean currents  
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Abyssal Zone   Deep benthic area with constantly cold (3* Celsius)  
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Canopy   Top forest layer  
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Permafrost   Permanently frozen ground stratum  
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Regulators   Organisms that use physical characteristics to achieve homeostasis in the face of environmental fluctuations  
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Conformers   Organisms that allow their elements of their bodies to vary due to external changes  
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Principle of Allocation   Each organism has a certain amount of energy that be allocated for obtaining nutrients, escaping predators, coping with environmental fluctuations, growth, and reproduction  
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Acclimation   Substantial but reversible changes in an organism to adapt to an environmental change  
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