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Ch. 5 Vocab.

Vocab.

TermDefinition
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 diverssity 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 webs
edge effect any different environmental condition occurring along and 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 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 replaced extremely slowly by natural processes
renewable resource any resource replaced by natural processes more quickly than it is consumed.
surainable use of resources at a rate that they can be replaced or recycled.
Created by: emarroquin33
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