Biology Exploration - Populations

Population pyramids symbolize graphically the age/gender arrangement of a population. Basically is shows how many men and women of a given age or age group are present in the population. They are detailed kinds of histograms, in which the male population is displayed on the left side of the graph, and the female population on the right; the youngest are the base of the pyramid, and the oldest are at its top. The very oldest are generally absent from the representation of the pyramid because it is unfeasible to depict this open-ended interval that includes a few of the oldest-old. Percentages are figured using both sexes combined or the total population as the denominator. A lot can be read from population pyramids as they can trace the history of a populace, as well as project its prospect. In particular, one can deduce the likelihood of population increase from a population pyramid (Population Pyramids, n.d.).

The humps in age pyramids contain the traces of precedent events such...

The impact of these events highlight the interrelationships amid population change and financial, social, political, and health elements. By evaluating population pyramids, one can also evaluate the prospective for future growth of a population. The age pyramid of a country that has a wide base has a lot of prospective for future population growth. If the death rates go down, more and more of the numerous children in the population will live to the age of childbearing (Population Pyramids, n.d.).
This is tremendously useful information. If one can project what proportion of the U.S. population will reach retirement age in 2020 or in 2050, then they can get a sense of the troubles that face social security. If one can project how fast the quantity of people living in areas where malaria is widespread, then they can predict the augments in budget allocated to fighting malaria that will be necessary to avoid growing transmission rates. Demographic data and projections are therefore a…