| A | B |
| agriculture | growing, breeding, and caring for plants and animals used for a variety of purposes |
| tragedy of the commons | conflict between short-term interests and long-term welfare |
| biodiversity | number and variety of species in an area |
| ecology | the study of how living things interact with each other and their nonliving environment |
| environmental science | study of how humans interact with their environment |
| supply and demand | describes the relationship between and items availabliity and its value |
| developing nation | high population growth,low energy use and low personal wealth |
| developed nation | low population growth, high personal wealth and high energy use |
| sustainability | when a population can survive indefinately |
| renewable | can be replaced quickly |
| industrial revolution | switched from animal muscle to fossil fuels |
| ecological footprint | amount of area needed to support one person |
| cost benefit analysis | used to determine how much to spend to achieve a positive outcome |
| nonrenewable | fuel, minerals, |
| renewable | plants, water, animals |
| depletion | when a resource is used up |