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Chp. 19, Section 2
Vocab for 19.2 Biology
Term | Definition |
---|---|
Growth rate | An expression of the increase in the size of an organism or population over a given period of time |
Immigration | The movement of an individual or a group to a new community or region |
Emigration | The movement of an individual or group out of its native area |
Exponential model | Logarithmic growth, or growth in which numbers increase by a certain factor in each successive time period |
Limiting factor | An environmental factor that prevents an organism or population from reaching its full potential of distribution or activity |
Logistic model | A model of population growth that assumes that finite resource levels limit population growth |
Carrying capacity | The largest population that an environment can support at any given time |
Density-independent factor | A variable that affects a population regardless of the population density, such as climate |
Density-dependent factor | A variable affected by the number of organisms present in a given area |
Inbreeding | The crossing or mating of plants or animals with close relatives |