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Chapter 3

Living Resources

QuestionAnswer
Natural resources Anything in the environment that is used by humans
Renewable resource A resource that is either always available or is naturally replaced in a relatively short time
Nonrenewable resources Natural resources that are not replaced in a useful time frame
Pollution The contamination of earth's air, land, or water
Environmental science The study of natural processes in the environment and how humans can affect them
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 An amount of a renewable resource that can be harvested regularly without affecting the future supply
Fishery An area with a large population of valuable ocean organisms
Aquaculture The practice of raising fish and other water-dwelling organisms for food
Biodiversity The number of different species in an area
Keystone species A species that influences the survival of many other species
Genes The structures in an organism's cells that carry its hereditary information
Extinction The disapperance of all members of a species from earth
Endangered species Species in danger of becoming extinct in the near future
Threatened species Species that could become endangered in the near future
Habitat destruction The loss of a natural habitat
Habitat fragmentation Breaking larger habitats into smaller, isolated pieces
Captive breeding
Poaching The illegal killing or removal of wildlife from its natural habitat
Created by: hhutchinson
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