Causes of Overpopulation Essay

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According to the U.S Census Bureau the current world population is estimated to be about 6,770,332,394 people and still growing exponential. Also the world population is suppose to be over 8 billion people by 2025, and 9.5 billion by 2050 (U.S. Census Bureau). The only way to prevent this problem from becoming a world epidemic is by truly understanding some of the causes of the problem and what this problem might bring to the future of mankind.

The world population growth is moving exponentially up in a J curve, which is normal for populations in nature with abundant resources. Surprisingly the human population has not yet reached the carrying capacity (Michigan U.). 11,000 years ago during the time of the agricultural revolution
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According to Carl Haub, the total number of people to ever be born is approximately 106 billion people up until 2002. With nearly 7 billion people alive today that is about 6% of the total people who ever lived (Curtin). Today the population growth rate is around 1.3%. the peak of population growth was between 1965-1970 when the growth rate was about 2.1%.

Many factors affect the growth of the populations including birth/death rate, age of overall population, resources, environment, and distribution. The most important is birth rates and death rates. Before modern medicine and urbanization the birth rate was very high but the death rate was about the same. In that time having a large family would improve status and life because of the extra help with needs. But today in developed countries with urban environments means a large family equals higher cost, lower standard of living, and lower status. In Thailand, where schooling is expensive, people saw that having more children caused having to spend more money on school. When this happened the births per woman went down from about 6 to around 2 in only ten years (Michigan U). The age distribution of developed countries is close to equilibrium due to the economic constraints. This means there are less young people to produce off spring, slowing the overall growth. In developing countries the age distribution is shaped like a pyramid, meaning many young people in turn causing more off spring and high population
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