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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.
An energy pyramid is a graphical model of energy flow in a community. 1  The different levels represent different groups of organisms that might compose a food chain. From the bottom-up, they are as follows: 2  Producers â bring energy from nonliving sources into the community.