Natural resources can be termed as natural endowment of a nation. It is what occurs naturally within a defined geographical region which can be considered valuable in the form that it is found or in their natural form. The value of natural resources is taken in terms of the quantity of the resource available and level of demand of that resource. Any naturally occurring commodity should be taken as a natural resource when its usefulness revolves around extraction, purification and exploration for meaningful purposes. In this regard some activities related to natural resources like mining, oil drilling and refinery, fishing, and others will naturally be taken as natural resource exploitation while other like agriculture may not taken in such context. According to the United States Geology survey (1999) natural resources should include minerals, energy, land, water and biota. Natural resource can be renewable and nonrenewable.