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Terms that you need to know for Unit 1: Ecology

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Term
Definition
Ecology   the study of organisms and there relationship with other organisms and their environment  
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Ecosystem   abiotic and biotic factors in a particular place and time  
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Community   Group of populations in a given place and time  
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Population   group of organisms/species in a given place or time  
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Species/Organism   a living thing,  
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Cells   Basic unit of life.  
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Tissue   group of cells that work together  
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Organs   made up of tissues that work together  
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Organ System   group of organs  
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Herbivores   organism that only eats plants  
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Omnivores   organism that eats plant and animals  
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Carnivores   organism that only eats animals  
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Primary Consumer   organism that eats producer/ autotrophs  
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Secondary Consumer   organism that eats the primary consumer, typically a omnivore or carnivore  
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Producer   organism that produces its own energy through photosynthesis or chemosynthesis  
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Autotrophs   organism that produces its own energy through photosynthesis or chemosynthesis  
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Heterotrophs   organism that has to consume in order to receive energy  
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10% Rule   90% of the energy is lost to heat and daily functions while 10% is transferred from one tropic level to the next.  
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Food Web   many flows of energy through an ecosystem. group of food chains  
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Food Chain   a single flow of energy through an ecosystem  
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Keystone Species    
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Climax Community    
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Primary Succession   growth that starts from bare rock.  
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Secondary Succession   growth that starts from an environment that has experienced a disturbance  
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tropisms    
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phototropism   an organisms reaction to light  
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hydrotropism   an organisms reation to water  
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thigmotropism   an organisms reaction to touch  
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gravitropism   an organisms reaction to gravity  
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Symbiosis   the relationship between two organisms  
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commensalism   one organism benefits while the other is neither benefited or harmed  
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parasitism   one organism will benefit while the other is harmed  
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mutualism   Both organisms benefit from the relationship  
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prey vs. predator    
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Natural Selection    
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Water cycle    
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Nitrogen cycle    
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Phosphorus Cycle    
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Carbon Cycle    
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Biogeochemical Cycles    
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abiotic factors    
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biotic factors    
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products    
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reactants    
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photosynthesis    
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cellular respiration    
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Created by: ewillis
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