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An energy pyramid is used to show how much energy is used in each trophic level in an ecosystem. This pyramid represents the flow of energy from one trophic level to the next, with energy decreasing as it moves up the pyramid.
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An average of 90 percent of energy is lost at each pyramid level through respiration, heat, and waste.
Each level of an energy pyramid typically represents only about 10% of the energy from the level below it. This is due to energy loss as it is transferred from one trophic level to the next, with much being lost as heat through metabolic processes.
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Energy pyramid Energy pyramid.
The energy pyramid shows how the amount of useful energy, food, decreases as organisms in that level use it. Even though a lot of energy may be taken in at any level, more energy in the form of food that is available to the next level, is stored on the bottom level and decreases at each level as you move to the top of the pyramid. Thus, there is much less energy to support organisms at the top, so there are fewer in most communities.
Approximately 10% of the energy is passed from one trophic level to the next in an energy pyramid. This means that as you move up the trophic levels, less energy is available for the organisms at higher levels.