Population density (in agriculture standing stock and standing crop) is a measurement of population In biology, a population is the collection of inter-breeding organisms of a particular species; in sociology, a collection of human beings. Statistical study of human populations occurs within the discipline of demography. This article refers mainly to human population per unit area or unit volume. It is frequently applied to living organisms The term "organism" first appeared in the English language in 1701 and took on its current definition by 1834 (Oxford English Dictionary), and particularly to humans Humans commonly refers to the species Homo sapiens , the only extant member of the Homo genus of bipedal primates in Hominidae, the great ape family. However, in some cases the term is used to refer to any member of the genus Homo. It is a key geographic term.
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