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biology vocab

chapter 4 and 5 vocab

QuestionAnswer
Carrying Capacity number of organisms an environment can support indefinitely.
Density-Dependent Factor disease, competition, predators, parasites. Have an effect as population increases.
Density-Independent Factor effects population regardless their density
Exponential Growth population grows larger.
Life- History pattern reproductive pattern
Age structure proportions of population at diff. age levels.
Birthrate # of live births per1000
Death rate # of deaths per1000
Demography study of human pop. size, density/distribution, movement, birht/death rates.
Doubling time time needed for pop. to double in size.
Acid precipitation rain, snow, sleet, fog. with low pH values.
Biodiversity variety of species in specific area.
Edge effect different conditions along boundaries.
Endangered species numbers become so low extinction is possible.
Exotic species not native to a particular area.
Extinction disappearance of species when last members die.
Habitat degradation damage to habitat by pollution.
Habitat fragmentation seperation of two wilderness areas.
Ozone layer reduces UV rays from reaching ground.
Threatened Species pop. of species likely to become endangered.
Captivity organism held by humans.
Conservation Biology study of implementation of methods to protect biodiversity.
Habitat Corridors protected strips of land to allow migration.
Natural resources Parts of environment that are useful.
Reintroduction Programs released organisms into an area where species once lived.
Substainable use strives to enable people to use natural resources.
Created by: marr
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