The application of human ecological perspective points out at the three basic functions of natural environment for the human beings and also for many other animal species.

The Environment provides the resources essential for life. These resources include air, water and materials used to create shelter, transportation and such other needed products. If human beings exhaust these resources in an irresponsible way for example by polluting the water supply or destroying rain forests then serious consequences will be the result The environment houses our species: Environment is our home, our living space, the place where we reside work and play, at times we take this truth for granted, but some others times we forget it and make our own living conditions very unpleasant and horrible.

It is only when our air becomes heavy with smoke, dust etc., if our tap water turns brown, if toxic chemicals seep into our garden only then we remember why it is vital to live in a healthy environment The environment serves as a waste respiratory: more than any other species on earth human beings produce a huge quantity and variety of products bottles, boxes, papers, plastics, sewage, garbage, and so on. Various types of pollution have become more common because human societies are generating more waste than the environment can safely absorb.