Nikolas
Created page with "* Dependency ratio is the ratio of the population who are economically inactive to those who are economically active: ** Dependency ratio = population < 15 and > 65 / population between 15 and 65 * Population size – the number of individuals in the population * Population density – the number of individuals in the population per unit of area * Age structure – the age structure of a population is shown by the population pyramid ** Most developed countries have contr..."