This principle states there is a level of human habitation intensity wherein the resources that are consumed will be replaced through the replenishing natural cycles of the seasons, creating environmental equilibrium. Embedded in the principle is contention that so long as nature can resurge each year; so long as the biomass can survive within its own eco-system; so long as the breeding grounds of fauna and avifauna are safe; so long as there is no erosion and the biomass is maintained, nature is only being utilized.