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There are 6 billion human beings on the face of the Earth. According to our best estimates, there are somewhere between three and seven times more people than this planet can possibly maintain over a long period of time. Non-renewable resources are being used at a ....

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.... on humans are seen. As human numbers increase, deterioration of water quality and destruction of animal and plant communities increase too. The serious effects of population growth apply even on the protected locations of this planet. Rapid expansion of human numbers also causes overexploitation of natural resources and provides pressure on food supplies. As a result it will not be long until we observe a remarkable decline in our living standards. Land, forest and water are some the vital resources that are threatened by enlargement of population density. Because population growth has expanded greatly over the last 500 years, as larger numbers ....