| A | B |
|---|
| RENEWABLE RESOURCES | A resource that is naturally replaced in a relatively short time |
| NONRENEWABLE RESOURCES | A natural resource that is not replaced as it is used |
| POLLUTION | A change to the environment that has a negative effect on living things |
| DEVELOPMENT VIEWPOINT | The belief that humans should be able to freely use and benefit from all of Earth’s resources |
| PRESERVATION VIEWPOINT | The belief that all parts of the environment are equally important, no matter how useful they are to humans |
| CONSERVATION VIEWPOINT | The belief that people should use natural resources as long as they do not destroy those resources |
| CLEAR-CUTTING | The process of cutting down all the trees in an area at once |
| SELECTIVE CUTTING | The process of cutting down only some trees in an area |
| SUSTAINABLE YIELD | A regular amount of a renewable resource that can be harvested without reducing the future supply |
| FISHERY | An area with a large population of valuable ocean organisms |
| AQUACULTURE | The practice of raising fish and other water organisms for food |
| TAXOL | Chemical in Pacific yew tree bark that has cancer-fighting properties |
| BIODIVERSITY | The number of different species in an area |
| KEYSTONE SPECIES | A species that influences the survival of many others in an ecosystem |
| GENES | Structure in an organism’s cells that carries its hereditary information |
| EXTINCTION | The disappearance of all members of a species from Earth |
| ENDANGERED SPECIES | A species in danger of becoming extinct in the near future |
| THREATENED SPECIES | A species that could become endangered in the near future |
| HABITAT DESTRUCTION | The loss of a natural habitat |
| HABITAT FRAGMENTATION | The breaking of a habitat into smaller, isolated pieces |
| POACHING | Illegal hunting of wildlife |
| CAPTIVE BREEDING | The mating of endangered animals in zoos or preserves |
