4 Demographic characteristics of fertility
A natural (biological) source of population growth lies in child-bearing. This process appears extremely difficult. In the sequel, we will consider its demographic aspect only, being treated in terms of fertility rates or the absolute number of newborns having both sexes. From the very beginning, one should keep in mind the following. Fertility rates represent average characteristics of the demographic process of fertility. They result from numerous individual acts of birth, being accumulated and averaged over a certain time period.
An important feature of fertility process is that its characteristics essentially depend on the region of location, religio-cultural traditions and economic level of population. ...
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