Everything available in our environment which can be used to satisfy our needs is called a Resource. Resources are technological accessible, economically feasible and culturally acceptable. Examples are coal, minerals, forest, land, water, fossil fuels etc.Resources are classified as follows :(i) On the basis of origin(a) Biotic : living resources like plants etc.(b) Abiotic : Non living resources like solar energy, land etc. (ii) On the basis of exhaustibility(a) Renewable : Which can be recreated like solar energy etc.(b) Non-Renewable: Which cannot be recreate like fossil fuels.(iii) On the basis of ownership(a) Individual (Personal) : Owned by an individual person.(b) Community : Owned by the whole community.(c) National : Owned by a country.(d) International : Accessed by all nations.(iv) On the basis of status of development.(a) Potential : Resources which are found in a region, but have not been utilized.(b) Developed : Which are surveyed and quality and quantity shows the utilization.(c) Reserve : Which can be used for meeting future requirements.(d) Stock: Which can not be used due to the lack of appropriate technology to used these resources.