Estadisticas de la poblacion mundial

Páginas: 6 (1368 palabras) Publicado: 31 de octubre de 2011
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Carlos Alfonso Amela
Professor Hernandez
March 4, 2011

The worldwide increase in population is not a reason for concern; the concern is that we are not saving any of the current available natural resources for the future generations that will populate the world. What is of utmost concern, on the other hand, is the rate at which we are depleting the availablenatural resources without any interest to replace them. In the world we live today, the resource of interest is petroleum, and it should be since it is vital to our everyday activities. The problem is very are leaving behind a resource that is the most vital to any human being, its environment, and the subsistence of our planet: water. The growth in world population, obviously brings with itchanges in housing, the distribution of where countries will accommodate their citizens as their cities grow bigger. Changes in GDP also occur. As more people live in a country, it is expected that such country will be more productive, although this is not always the case. With more people populating the world, there is more consumption of goods, which in turn brings pollution and an increased demandfor our air supplies. The population growth has a directly proportional relationship with the topics mentioned before, and as such we will analyze them independently and in

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detail. We have to be conscious of what we have, what we will have, but most importantly what we will be lacking if we keep depleting our goods.

The latest official current world population estimate, for mid-year2010, is estimated at 6,852,472,823. The growth rates have changed over the years. For example the highest rates of growth—increases above 1.8% per year—were seen briefly during the 1950s, for a longer period during the 1960s and 1970s; the growth rate peaked at 2.2% in 1963, and declined to 1.1% by 2009. The rates of population increase are most prominent in developing countries such as the onesfound in Africa and Latin America, more developed countries such as the ones found in Europe or North America have much more smaller rates. This is mainly due to the levels of education, the amount of money invested in medicine, and better living conditions. As demographics explain, a developing country (mostly dependant on agriculture) will have higher fertility rates, thus higher populationgrowths because for farmers in these countries the more children they have, the greater their labor force. It is only when these countries evolve from developing into developed, that these patterns are diminished, to the point of completely disappearing. In the 20th century, the world saw the biggest increase in its population in human history due to lessening of the mortality rate in many countriesdue to medical advances and massive increase in agricultural productivity attributed to the Green Revolution (a series of studies that have been made to develop better agricultural techniques, including the creation of higher-yielding grains). All these advances in medicine and sources of food provide better conditions to have more children. Overall the
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world has a small, but steadygrowth rate, which may come to a halt if certain factors come into play. In 2006, the United Nations stated that the rate of population growth is diminishing due to the demographic transition. If this trend continues, the rate of growth may diminish to zero, concurrent with a world population plateau of 9.2 billion, in 2050. However, this is only one of many estimates published by the UN. In 2009, UNprojections for 2050 range from about 8 billion to 10.5 billion. The next figure portrays the distribution of the world population by region, throughout a span from the 1800’s to the estimate at 2050. As it is seen, Africa and Latin America (where most developing countries in the world are located) are the only regions that have a growing rate, the rest of the regions have a declining rate....
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