Food pyramid and Organic phenomenon

Food pyramid noun - (ecology) a hierarchy of food chains with the principal predator at the top; each level preys on the level below.

Organic phenomenon and food pyramid are semantically related. In some cases you can use "Organic phenomenon" instead a noun phrase "Food pyramid".

Organic phenomenon noun - (biology) a natural phenomenon involving living plants and animals.

Food pyramid and organic phenomenon are semantically related. Sometimes you can replace phrase "Food pyramid" with "Organic phenomenon", this phrases are similar.