Chapter 5 Vocabulary flash cards

Set: Chapter 5 Vocabulary

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	Term	Definition
	biodiversity	refers to the variety of life in an area
	extinction	is the disappearance of a species when the last of its members die.
	threatened species	when the population of a species begins declining rapidly.
	endangered species	a species is considered to be an endangered species when its number become so low that extinction is possible.
	habitat fragmentation	the separation of wilderness areas from other wilderness areas.
	edge effect	the different conditions along the boundaries of an ecosystem.
	habitat degradation	the damage to a habitat by pollution.
	acid precipitaiton	rain, snow, sleet, and fog with low pH values- is responsible for the deterioration of forests and lakes.
	ozone layer	is part of the atmosphere that contains a sort of sunscreen that helps to protect living organism on Earth's surface from receiving damaging or lethal doses of ultraviolet radiation.
	exotic species	such as the goat and the lamprey, are organisms that are not native to a particular area.
	conservation biology	a new field that studies methods and implements plans to protect biodiversity.
	sustainable use	strives to let people use the resources of wilderness areas in ways that will not damage the ecosystem.
	habitat corridors	natural strips that allow the migration of organisms from one area to another.
	reintroduction programs	programs that release organisms into an area where their species once lived.
	captivity	when members of a species are held by people in zoos or other conservation facilities.

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