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Ecology Chapter 3

QuestionAnswer
Natural Recource Anything naturally occurring in the environment that humans use.
Pollution Contamination of Earth's land, water,or air.
Point Source A specific source of pollution that can be identified.
Nonpoint Source A widely spread source of pollution that is difficult to link to a specific origin.
Environmental Science The study of natural processes that occur in the environment and how humans can affect them.
Clear-Cutting The process of cutting down all the trees in an area at a once.
Selectuive Cutting The process of cutting down only some tree species in a certain area.
Sustainable Yeild An amount of renewable resource that can be harvested regularly without reducing 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 total number of different species on earth, including those on land, in the water, and in air.
Keystone Species A species that influences the survival of many other species in an ecosystem.
Gene A sequence of DNA that determines a trait and is passed from parent to offspring.
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 Distruction A loss of natural habitat.
Habitat Fragment The breaking of a habitat into smaller, isolated pieces.
Poaching Illegal killing or removal of wildlife from there habitats.
Captive Breeding The mating of animals in a zoos or wildlife preserves.
Created by: GavinM
 

 



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