Study the diagram. an illustration of a transverse wave with the high point of the wave labeled a, the low point of the wave labeled c, the height of the wave was labeled b and the distance between two adjacent low points labeled d. point c identifies the of the wave.

Natural resources without human resource is useless.Thats why natural resources is called passive resource whereas natural resource is called active resource.

human can make the best use of resource if they have knowledge,education and technology to do so.they can also be the creator of national wealth.In fact human resource are superior to other resource such as land and capital because they make use of land and capital.