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Population Explosion


* Definition of population explotion:
The geometric expansion of a biological population, especially the unchecked growth in human population resulting from a decrease in infant mortality and an increase in longevity.

* Effects of over population :
Some problems associated with or exacerbated by human overpopulation:
• Inadequate fresh water[190] for drinking water use as well as sewage treatment and effluent discharge. Some countries, like Saudi Arabia, use energy-expensive desalination to solve the problem of water shortages. [191][192]
• Depletion of natural resources, especially fossil fuels[193]
• Increased levels of air pollution, water pollution, soil contamination and noise pollution. Once a country has industrialized and become wealthy, a combination of government regulation and technological innovation causes pollution to decline substantially, even as the population continues to grow.[194]
• The chronic inability of many of these countries to escape from the "Malthusian trap" via economic growth exceeding population growth. Many Third World countries simply lack the economic or infrastructural base to provide a rising standard of living for most of their people, especially in Africa, the Arab world, and parts of Latin America.
• Deforestation and loss of ecosystems[195] that sustain global atmospheric oxygen and carbon dioxide balance; about eight million hectares of forest are lost each year.[196]
• Changes in atmospheric composition and consequent global warming[197]
• Irreversible loss of arable land and increases in desertification[198] Deforestation and desertification can be reversed by adopting property rights, and this policy is successful even while the human population continues to grow.[199]
• Illegal (and legal) immigration to the developed world on an unprecedented scale, creating an unprecedented demographic and...