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Chapter 3 APES

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
Biosphere   The region of our planet where life resides, the combination of all ecosystems on Earth.  
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Producer/Autotroph   An organism that uses photosynthesis to produce energy; autotroph  
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Photosynthesis   Process by which producers use solar energy to convert carbon dioxide and water into glucose.  
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Cellular respiration   the process by which cells unlock energy of chemical compounds  
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Consumer/Heterotroph   An organism incapable of photosynthesis; eats other organisms  
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Herbivore/primary consumer   A consumer that eats producers; primary consumers  
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Carnivore   Eats other consumers  
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Secondary consumer   A carnivore that eats primary consimers  
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Tertiary consumer   Carnivore that eats other secondary consumers  
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Trophic levels   successive levels of organisms consuming one another  
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Food Chain   The sequence of consumption from producers through tertiary consumers.  
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Food Web   A complex model of how energy and matter move between trophic levels.  
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Scavengers   organisms that consume dead animals  
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Detrivores   organisms that specialize in breaking down dead tissues and waste products.  
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Decomposers   Fungi and bacteria that convrt organic material into small elements and molecules that can be recycled back into the ecosystem.  
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GPP   total amount of solar energy produced over a given period of time.  
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NPP   Total amount of solar energy produced over a given period of time minus the energy producers respire.  
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Biomass   Total amount of living matter in a specific area.  
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Ecological Efficiency   the proportion of consumed energy that can be passe from one trophic level to another.  
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Trophic Pyramid   A representation of the distribution of biomass, numbers, or energy among trophic levels.  
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biogeochemical cycle   The movement of matter within and between ecosystems.  
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Hydrologic cycle   The movement of water within and through the biosphere,  
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Transpiration   the release of water from leaves during photosynthesis  
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Runoff   Water that moves across the land surface and into streams and rivers  
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Carbon Cycle   the movement of carbon around the biosphere  
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Limiting Nutrient   A nutrient required for the growth of an organism but available in a lower quantity than other nutrients.  
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Nitrogen Cycle   Movement of nitrogen around the biosphere  
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Leaching   The transportation of dissolved molecules through the soil via groundwater.  
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Phosphorus cycle   The movement of phosphorus around the biosphere.  
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Sulfur cycle   movement of sulfur around the biosphere.  
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