- Biological resources such as crops, forests and animal populations represent a complete category of resources.
- They use the flow of solar energy, the flow or fund of hydrological resources and the fund of soil nutrients.
- In a stable unmanaged ecosystem, the biomass of any species tends towards S, the carrying capacity.
- If for some reason the biomass were to fall below S, it would continue to fall to zero. S is the extinction threshold.
Join the conversation