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Grade 6 Ch 3 environ

Environment Ch 3 Living Resources

renewable resources natural resources that can be replaced in a relatively short time
nonrenewable resources natural resources that are not replaced as they are used
examples of renewable resources sunlight, wind, trees
examples of nonrenewable resources coal and oil
pollution any change to the environment that has a negative effect on living things
environmental science the study of the natural processes that occur in the environment and how humans can affect them
development viewpoint the belief that humans should be able to freely use and benefit from all Earth's resources
preservation viewpoint the belief resources should be a source of beauty, comfort, and recreation; living things should not be disturbed for the benefit of people
conservation viewpoint the belief that people should use resources for the environment as long as they don't destroy those resources; this view is the balance between development and preservation
clear-cutting the process of cutting down all trees in an area at once
selective cutting cutting down only some trees in a forest and leaving a mix of tree sizes and species
sustainable yield a regular amount of a renewable resource that can be harvested without reducing the future supply
fishery an area with a large population of valuable ocean resources
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 structures in an organism's cells that carry its hereditary information
niche an organism's particular role in an ecosystem, or how it makes it living
extinction the disappearance 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 or fragments
poaching the illegal killing or removal of wildlife species
captive breeding the mating of animals in zoos or wildlife preserves to increase their number and chance for survival
taxol the substance that protects the Pacific Yew tree and can be used as a medicine treatment for cancer
Created by: Dcoleman