write a note on energy pyramid
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A pyramid of energy represents how much energy, initially from the sun, is retained or stored in the form of new biomass at each trophic level in an ecosystem. Typically, about 10% of the energy is transferred from one trophic level to the next, thus preventing a large number of trophic levels.
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A pyramid is a structure, usually of stone, built in the shape of a pyramid. From ancient to modern times people in many different parts of the world have built such structures. The word "pyramid" comes from the Greek word pyramis which meant "wheat cake." The ancient Egyptian word for them was something like "Mer".
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