Provisioning
goods taken directly from ecosystems or made from natural resources (wood, paper, etc.)
Regulating
natural ecosystems regulate climate/air quality, reducing storm damage and healthcare costs
Supporting
Natural ecosystems support processes we do ourselves, making them cheaper and easier (pollinators, etc.)
Cultural
Money generated by recreation (parks, camping, etc) or scientific knowledge
Biotic Potential
The maximum rate at which a population would increase under ideal conditions (when the birth rate is maximal and death rate minimal)