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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.
In this section we will discuss what is meant by food chains, food webs and ecological pyramids.The first trophic level is the producers, followed by the primary consumers, followed by the secondary, and finally, tertiary consumers. On the side of most energy-flow pyramids are the decomposers. I got this answer here!