(i) There is a need for environmental management because environmental problems are becoming serious due to increasing population, industrialization, urbanization and poor management procedures. In the process of development, the natural resources are used by mankind in thoughtless and indiscriminate manner for their immediate gain. This process results in overall degradation of the environment and increases complexity. (ii) Sustainable development may be defined as the development that meets the needs of the present without compromising the ability of future generations to meet their own needs.