Natural resources are the way to various technological improvement all over the world.

Natural resources are the way to various technological improvement all over the world. Its natural and alternative forms are the source to many appropriate technologies to the mankind. Some kind of natural resources are like water, air, land, soil, animals, forests, minerals, energy, metals, etc. Although resources are not available in equal proportion all over the world. The importance of resources can be clearly realized in the area where they are rather scarce. Over exploitation of the natural resources threatens the existence of them on the earth especially non-renewable sources.