... 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 identical in their consumption, and thus ... period nearly sixty million hectares of forest were converted to farmland and a similar amount of forest was put to non-agricultural uses. This is equivalent to the...

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