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Answers. 1  A food chain is the what animal eats what animal. It really should be called a food web because many animals eat many other animals. The food web is a representation of an energy pyramid. An energy pyramid just shows where the energy is going. The sun is at the bottom, then plants and so on. There really are not many differences between them.
A: An energy pyramid is a graphical representation of how energy flows in an ecosystem The pyramid consists of trophic, or nutritional, levels. It shows how energy decreases and becomes less available for organisms as it enters every trophic level, as well as the amount of energy lost to the atmosphere in the form of heat.