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chapter 1 lesson 2

Birth rate The number of births per 1,000 individuals for a certain time period.
Death rate The number of deaths per 1,000 individuals for a certain time period.
Immigration Movement of individuals into a population`s area.
Emigration Movement of individuals out of a population`s area
Population density The number of individuals in an area of a specific size.
limiting factor An environmental factor that that causes a population to decrease in size.
Carrying capacity The largest population that a particular environment can support.
Ntural selection The process by which to organisms that are best adapted to their environment are most likely to survive and reproduce.
Adaption An inherited behavior or physical characteristic that helps an organisms survive and reproduce in its environment.
Nicne How an organism makes its living and interacts with the biotic and abiotic factor in its habitat.
competition The struggle between organisms to survive as they attempt to use the same limited resourcer in
Succession The series of predictable changes that occur in a community over time.
PRIMARY Succession the series of changes that occur in an area where no soil or organisms exist.
Pioneer species the first population an area during succession.
Secondary succession The series of changes that occur in an area where the ecosystem has been disturbed , but where soil and organisms still exist.
Created by: ksb201020351