| A | B |
|---|
| Biodiversity | Number of different species living in an specific area. |
| Ecosystem diversity | Variety of ecosystem's in the biosphere |
| Extintion | The disapperance of a species when the last of its members dies. |
| Genetic Diversoty | Variety of inheritable characteristics or genes in an interbreeding population. |
| Species diversity | In a biological community,the number and abundance of different species. |
| Background extintion | Gradual prcess of a species becoming extint. |
| Biological magnification | Increasin concentration of toxic substances,such as DDT, in organisms as thropic levels increas in food chains or food webs. |
| Edge effect | Any different environmental condition occuring along an ecosystem's boundaries. |
| Eutrophication | Water pollution from nitrogen-rich and phosphorus-rich substances flowing into waterways,causing algal over growth. |
| Habitat fragmentation | Habitat loss from separation of an ecosystem into small pieces of land. |
