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Date _____________________ pg. _____ Energy Pyramid An energy pyramid is a graphical model of the transfer and flow of energy through an ecosystem. Food Chain – series of events in which one organism eats another and obtains _________________. Each level is called a _________________ level. Food Web - _______________ overlapping food ________________ in an ecosystem. Decomposers: Organisms use the _______________ released in the food chain to carry out all of their daily activities through the process of ____________________________ 6O2 + _________ 6H2O + 6CO2 + __________