Human beings extract raw materials found in the environment and convert them into resources for the development of society, and nation. Development of resources is the efficient and optimum utilization of resources that are used by us for our various needs and contribute to the growth of the economy. Everything available in our environment which can be used to satisfy our needs, is called a resource. It should be technologically accessible, economically feasible and culturally acceptable. Examples of resources are minerals, forests, fossil fuels etc.