Grade 6 Ch 3 environ Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
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
Popular Science sets