Answer:
Because a energy pyramid takes the shape of a pyramid.
Step-by-step explanation:
- Energy pyramids shaped the way they are this is because when an energy flow is observered in increasing order it takes a shape of a pyramid and in case for decreasing energy it take the shape of inverted pyramid.
- An energy pyramid's shape shows how the amount of useful energy that enters each level — chemical energy in the form of food — decreases as it is used by the organisms in that level. That's why energy flow is depicted in the shape of a pyramid.
Result: Pyramids is used to show a food chain.