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Environmental consequences of overpopulation essays ith traditionally high fertility rates will have a very young structure age. Thus, a decrease in the fertility rate will still result in a greater absolute number of births, as there are more potential mothers. Populations are very slow in adjusting to decreases in fertility rates. This is especially frightening when considering that South Asia has a population of 1,204,600,000 (and a doubling time of thirty two years), Sub-Saharan Africa has 528,000,000 (doubling time: thirty one years), and North Africa/Southwest Asia has 448,100, 000 (doubling time: twenty seven years) (De Blij and Muller, 1994, p.529-531) and all of these areas have traditionally high fertility rates. Although third world countries do have a far larger population than industrialized nations, and the trend is constantly increasing, their populations should not bear the responsibility for our population-induced degrading environment. The cheap write my essay security domains and strategies we make on the biosphere is sometimes expressed mathematically by ecological economists as I = PAT. I being impact, P population, A affluence (consumption)and T technology (environmentally bad technology) (Ehrlich and Ehrlich, 1990, p.24). Concern regarding population increases often focuses on the third world, since it is there that growth is exponential. Yet, it is necessary to recognize that people are by no means equal or service that will provide you with the highest in invicta watches battery replacement consumption, and thus their impact on the environment. “The sky is held up by the trees. If the forest disappears the sky, which is the roof of the world collapses. Nature and man perish together.” - Amerindian legend Forests are a precious link in the life systems of our planet. They are a part of these vital ecosystem services without which earth would not have been habitable by the human species in the first place and would certainly have become inhabitable again. Forests have crucial roles in the carbon, nitrogen, and oxygen cycles that nouris.