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Chapter 4 Vocab

TermDefinition
Population density The number of organisms per unit area.
Dispersion The pattern of spacing of a population within an area.
Density-independent factor Any factor in the environment that does not depend on the number of members in a population per unit area.
Density-dependent factor Any factor in the environment that depends on the number of members in a population per unit area
Population growth rate How fast a given population grows.
Emigration The number of individuals moving away from a population.
Immigration The number of individuals moving into a population.
Carrying capacity The maximum number of individuals in a species that an environment can support for a long term.
Demography The study of human population size, density, distribution, movement, and birth and death rates.
Demographic transition The change in a population from high birth and death rates to low birth and death rates.
Zero population growth (ZPG) When births plus immigration equals deaths plus emigration.
Age structure The number of males and females in each of three age groups: pre-reproductive stage, reproductive stage, and post-reproductive stage.
Created by: ahindmon
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