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There are 4 sections in ch.3

Natural resource Anything in the environment that is used by people
Renewable Resources A resource that is either always available or are 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 land,water,or air
Environmental Science The study of natural proceses 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 Cutting down only some trees in a forest and leaving a mix of tree sizes and specis behind
Sustainable Yield An amount of renewable resource that can be harvested reglarly without reducing the future supply
Fishery An are with a large population of valuable ocean organisms
Aquaculture The practice of raising fish and 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 in an ecosystem
Genes A structure in an organisms cells that carries its hereditary information
Extinction The disappearance of all members of a species from Earth
Endangered Species A species in danger of becoming extinct in the near future
Threatened Species A species that could become endangered in the near future
Habitat Destruction The loss of a natural habitat
Habitat Fragmentation The breaking of a habitat into smaller isolated pieces
Poaching Illegal killing or removal of wildlife from their habitats
Taxol A chemical in Pacific yew tree bark that has cancer fighting properties
Captive Breeding The mating of animals in zoos or wildlife preserves
Created by: levans