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Pop & Eco 5 (Energy Pyramids)

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Term
Definition
Energy Pyramid   a diagram that shows the amount of energy that moves from one feeding level to another in a food web  
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Trophic Levels   The levels of an energy pyramid through which energy flows from producers to primary consumers, secondary consumers and so on.  
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Autotroph   An organism that makes its own food (a producer)  
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Omnivore   organism that obtains energy by eating both plants and animals  
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Detrivore   a scavenger, such as an earthworm, that feeds on dead plant and animal matter  
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Biomass   organic matter that can be a source of energy in an ecosystem.  
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Photosynthesis   process by which plants use the sun's energy to convert water and carbon dioxide into sugars  
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Reactants of Photosynthesis   CO2 & H2O  
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Products of Photosynthesis   C6H12O6 (glucose) & O2 (oxygen)  
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Calories   Units of heat that measure the energy used by the body and the energy that foods supply to the body  
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Items that lack calories   Water, sleep, vitamins, minerals  
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Items that have calories   Fats, Carbohydrates, Proteins  
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Uses for food   Energy, nutrients, building body tissue.  
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10%   The amount of biomass energy that transfers up to the next trophic level in an ecosystem.  
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90%   The amount of biomass energy lost beween trophic levels in an ecosystem.  
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Decomposers   Organisms that break down wastes and dead organisms and return raw materials to the environment  
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Herbivores   An organism that eats only plants.  
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Carnivores   Organisms that eat other animals for energy  
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Detritus   Dead organic matter or waste products  
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Heterotrophs   organisms that cannot make their own food  
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Created by: KBadgley
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