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sections 123

science

QuestionAnswer
natural resource anything in the environment that it used by people
renewable resource resources that are either always availible or naturally replaced in a relatively short time
nonrenewable resource a natural resource that it NOT replaced in a useful time
pollution contamination of earth's air land or water
Environmental science the study of natural processes in the environment and how people affect them
clear cutting the tree cutting method of cutting all of the trees in a certain area
selective cutting cutting some trees down in an area and leaving different sizes and species behind
sustainable yield an amount of a renewable resource that can be harvested without decreasing 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 in an ecosystem
genes the structures in an organisms cells that carry its hereditary information
extinction the disappearance of all members of a species
endangered species species in danger of becoming extinct in the near future
threatened species species that become endangered in the near future
habitat destruction the loss of a natural habitat
habitat fragmentation breaking larger habitats into small isolated pieces
poaching the illegal killing or removal of wildlife from their habitats
captive breeding the mating of animals in zoos or wildlife preserves
Created by: gedgell
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