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Chapter 5

Vocabulary

TermDefinition
Biodiversity number of different species living in a specific area.
Ecosystem biological community and all the nonliving factors that affect it.
Extinction the dissappearance 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 gradula 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 webs.
Edge Effect any different environmental conditon occuring along an ecosystem's boundaries.
Eutrophication water pollution from nitrogen-rich and phosphorus-rich substances flowing into waterways, casuing algal overgrowth.
Habitat Fragmentation habitat loss from separation of an ecoystem 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 organisims 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 essentail materials to a degraded ecosystem.
Bioremediation tecnique using living organisms to detoxify a polluted area.
Endemic found only in one specific geographic area.
Nonrenewable Resource any natural resource available inlimited amounts or replaced extremely slowly by natural processes.
Renewable Resource any resource replaced by natural processes more quickly than it is consumed.
Sustainable use of resources at a rate that they can be replaced or recycled.
Created by: IsabelVargas21
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