energy pyramid is not in our dictionary (yet). Here's what it could mean:

Results generated using artificial intelligence.

noun

A graphical model illustrating the progressive loss of energy at each successive trophic level in an ecosystem, with producers forming the base and consumers occupying the higher, narrower tiers.

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The biology teacher used an energy pyramid to explain why there are fewer lions than there are zebras on the savanna.

From AI

In most ecosystems, the model is upright, showing a decrease in available power at each successive trophic level.

From AI