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Environmental Science_Unit2_IP

Environmental Science_Unit2_IP - Environmental Science Unit...

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Environmental Science Unit 2 Individual Project Kregg M. Soltow May 5, 2011 American Intercontinental University Define demographic transition. Give an example. Demographic transition, or DT, is described as a representation utilized to signify the evolution from “elevated birth and death rates to low birth and death rates” (Thompson,2003) for any given nation state that is developing from a pre industrial to an actual productive industrialized profitable structure. An good example of a country exhibiting a demographic transition would be the United States between the years of 1800 and the 1940’s. During this time there was a demographic swing from a nation of generally rural populace with rather high fertility, to a primarily urban populace with low and sharply diminishing fertility. This transition was primarily due to technological progress and industrialization of labor. In one specific aspect such as agriculture, as technology improved over the years, agricultural productivity reduced the demand for human labor, labor that was otherwise previously met with the demand for children by farmers in rural areas. This decrease in demand for labor later on contributed to an initial decrease in mortality later to be followed by another decrease in fertility. Describe the 4 phases of demographic transition, including if the population is stable, growing, or declining in each. Stage One: In a society that has not yet reached an industrial accomplishment, mortality and fertility were mutually high and varied swiftly in result to ordinary events, such as famine and sickness, and in turn fabricated a fairly steady and youthful populace. There were little to know conceptions on building families and or contraception, therefore, at the time the rates of birth were purely dependant on the female populations abilities to bear children. Migration also lowered mortality in specific instances and it would be safe to say that the population during this time was between stable and growing. A good example of this would be the Eastern United States for the duration of the 19th century,
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