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biology ch.4 vocab

TermDefinition
carrying capacity largest number of individuals in a species that an environment can support long-term.
density-independent factor environmental factor such as storms and extreme heat or cold that affects populations regardless of the density.
density-dependent factor environmental factor, such as predation, disease, and competition, that depends on the number of members in a population per unit area.
dispersion arrangement of a population in its environment.
emigration movement of individuals away from a population
immigration movement of individuals into a population.
population density group of organism of the the same species that occupy the same geographic place at the same time
population growth rate how fast a specific population grows.
age structure in any population, the number of individuals in their pre-reproductive, reproductive, and post-reproducitive years.
demographic transition population change from high birth rates and death rates to low birth rates and death rates.
demography study of human population based on size, density, movement, distribution, and birth and death rates.
zero population growth occurs when the birth rate equals the death rate.
Created by: whitney16
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