Sustainable development is defined as meeting the needs of present without compromising the ability of future generations to meet their own needs. The purpose of sustainable development is to achieve equitable distribution of resources continuously for many human generations.
This type of development emphasizes the use of renewable resources and appropriate technology. During the Earth Summit in 1992 held at Rio de Janeiro, Brazil one of the significant agreements was agenda-21 which proposed a global programme of action on sustainable development in terms of social, political and economic context.
Sustainable development can be achieved by creating environmental awareness, adopting modified eco-friendly technology and determination and well at individual, national and international level.