What is the advantage of a multi-tiered biocenosis over a single-tiered?

The occurrence of layering is the result of prolonged adaptation of different species to each other and the formation of interspecific ties and relationships. Layering contributes to a significant weakening of competition between species for resources and territory. Due to this, the number of individuals per unit area increases, the conditions and resources of the biotope are more fully and rationally used.

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