| A | B |
| Biodiversity | The variety in the number of species of living things, and the genetic differences between them. |
| Fossil Fuel | Hydrocarbon primarily coal, oil and gas formed from organic remains of prehistoric plants and animals |
| Trade-Off | A situation that involves reducing or forgoing one or more desirable outcomes in exchange for increasing or obtaining other desirable outcomes |
| Biomagnification | When the concentration of a toxic substance such as DDT increeasing in concetration as it moves up through the food chain. |
| Renewable Resources | any resource that can replenish itself naturally overtime |
| Direct Harvesting | When plants or animals are removed from their habitats in large enough quantities to destroy their population |
| Non-Renewable | a resource that is finite |
| Ozone Depletion | break down of the protective atmospheric blanket |
| Introduced (Imported) Species | organisms brought to areas they are not native to |
| Pesticide | chemical used to control pests- plant, animal, bacterial, fungal |
| Acid Rain | any form of precipitation with low pH |
| Recycle | process changing waste materials into new products |
| Deforestation | clearing a forest or stand of trees where the land is thereafter converted to non-forest use |
| Deplete | use up the supply or resources |
| Nuclear Power | energy released from an atomic reaction |
| Conservation | preservation, protection or restoration of the natural environment |
| Biological Control | the control of a pest by the introduction of a natural enemy or predatot |
| Water Pollution | the contamination of bodies of water with chemicals |
| Industrialization | process in which a society or country transforms itself from a primarily agricultural society into a manufacturing society |
| Global Warming | a gradual increase in the overall average temperature of earth's atmosphere |
| ozone | chemical consisting of 3 Oxygen atoms bonded together with the formula O3 |