| Each step in the food chain, illustrated by the energy pyramid, is called a trophic, or feeding, level. |
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| The flow of energy from one trophic level to another can be pictured in the form of an energy pyramid. |
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| An ecosystem may only be able to support a few large animals at the top of the energy pyramid, whilst animals at the lower levels of the energy pyramid get their energy from the source. |
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| The loss of energy from a food chain can be represented by an energy pyramid in which producers form the base of the pyramid, and carnivores form the top levels. |
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| This leads to an inevitable energy pyramid and various ecological efficiencies that determine the quantity of energy transferred between successive trophic levels. |
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| The energy pyramid shows the direction that energy flows through an ecosystem. |
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| The centerpiece was an energy pyramid, much like the familiar food pyramid, except with crop residue at the bottom leading right up to wind, solar and hydrogen at the top. |
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