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Unit 3 Terms

Biology Terms

TermDefinition
Carrying Capacity the number organisms a region can support without environmental degradation.
Density-Dependent When an environment is changed by the number of population.
Density-Independent Affects population non-dependent on population.
Exponential Growth growth whose rate becomes ever more rapid in proportion to the growing total number or size.
Life-History Pattern the factor that determines population growth
Age Structure proportions of the population that are in different age levels.
Birthrate The rate of which organisms are born.
Death Rate The rate of which organisms die.
Demography The statistics of the organisms.
Doubling Time the time needed for a population to double in size.
Acid Precipitation Rain with high acidity.
Biodiversity the variety of life in the world or in a particular habitat or ecosystem.
Edge Effect The different conditions along the boundaries of an ecosystem.
Endangered Species An organism that is close to extinction.
Exotic Species An organism that is not commonly found.
Extinction When an organism no longer exists.
Habitat Degradation The damage by pollution to a habitat.
Habitat Fragmentation the separation of wilderness areas from other wilderness areas.
Ozone Layer A layer above the Earth that absorbs all UV light.
Threatened Species When the population of a species is likely to become endangered.
Captivity When an organism lives in a human controlled area.
Conservation Biology The study of methods to protect biodiversity.
Habitat Corridors Protected strips of land that allow the migration of organisms from one wilderness area to another.
Natural Resources Things found in nature that can be useful to society.
Reintroduction Programs When you release organisms into an area where the species once lived.
Sustainable Use To use natural resources in ways that will benefit them and maintain the ecosystem.
Created by: superman429
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