Population

From Wikipedia, the free encyclopedia.

statistics, see statistical population.

In the most common sense of the word, a population is the collection of people—or organisms of a particular species—living in a given geographic area.

Population is studied in a wide variety of ways and disciplines. In population dynamics, size, age and sex structure, mortality, reproductive behaviour, and growth of a population are studied. Demography is the study of human population dynamics. Other aspects are studied in sociology, economics, and geography. Plant and animal populations are studied in biology, in particular in that branch of ecology known as population biology, and in population genetics. In biology, a population denotes a breeding group whose members breed mostly or solely among themselves, usually as a result of physical