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Ch 5 Vocab
| Term | Definition |
|---|---|
| Biodiversity | number of different species living in a specific area. |
| Ecosystem | biological community and all the nonliving factors that affect it. |
| Extinction | the disappearance of a species when the last of its members dies. |
| Genetic Diversity | variety of inheritable characteristics or genes in an interbreeding population. |
| Species Diversity | in a biological community, the number and abundance of different species. |
| Background Extinction | gradual process of a species becoming extinct. |
| Biological Magnification | increasing concentration of toxic substances, such as DDT, in organisms as trophic levels increase in food chains or food web. |
| Edge Effect | any different environmental condition occurring along an ecosystem's boundaries. |
| Eutrophication | water pollution from nitrogen-rich and phosphorus-rich substances flowing into waterways, causing algal overgrowth. |
| Habitat Fragmentation | habitat loss from separation of an ecosystem into small pieces of land. |
| Introduced Species | nonnative species deliberately or accidentally introduced into a new habitat. |
| Mass Extinction | a large-scale dying out of a large percentage of all living organisms in an area within a short time. |
| Natural Resource | any material or organism in the biosphere, including water, soil, fuel, and plants and animals. |
| Overexploitation | overuse of species with economic value- a factor in species extinction. |
| Biological Augmentation | technique of adding essential materials to a degraded ecosystem. |
| Bioremediation | technique using living organisms to detoxify a polluted area. |
| Endemic | found only in one specific geographic area. |
| Nonrenewable Resource | any natural resource available in limited amounts or replaces extremely slowly by natural process. |
| Renewable Resource | any resource replaces by natural processes more quickly than it is consumed. |
| Sustainable | use of resources at a rate that they can be replaced or recycled. |