The environmental movement is an expression of fundamental change in man’s perception of life on earth.

The evidence of this change has appeared at every level of social organization – local, regional, national and international. The shift from view of earth with unlimited resources in abundance and exclusively created for man’s use to the concept of earth as a domain of life or biosphere in which man is just one of the species among millions or simply a temporary resident custodian has been remarkable. It has occurred within a span of a century or so and is a development of great significance for the future of all life on this planet.

The global concern for environment, wild life and natural resources caused the development of legal frame-work both at national and international levels. Rules were established by authority, mutual consensus or traditions to regulate the behaviour of individuals, members of a community or concerned countries for the protection of environment and natural resources.