| Term | Definition |
| Parts of Biosphere | lithosphere, atmosphere, hydrosphere |
| Renewable resources | A natural resource qualifies as a renewable resource if it is replenished by natural processes at a rate comparable or faster than its rate of consumption by humans or other users. |
| Non-renewable resources | A non-renewable resource is a natural resource that cannot be produced, re-grown, regenerated, or reused on a scale which can sustain its consumption rate. |
| Carrying Capacity | the number of individuals an environment can support without significant negative impacts to the given organism and its environment. |
| Phantom Carrying Capacity | a carrying capacity that is only temporary because of its dependence on a finite supply of fossil fuels, which will soon peak |
| Sustainability | when it meets the needs of people today without jeopardizing the well being of future generations |
| Components of Sustainability | Social, Environmental and Economic |
| In 'The Lorax', how did the thneed industry affect the physical environment? | pollution of the water and the air; loss of habitat; deforestation |