Also called as the terrain is the variation that exists in the amount of the relief of the surface and difference is between the highest and lowest dimensions.
The relief can be shown of a topographic map and this represents the elevation for the vales reduced to the mean sea levels and thus shows the variations in height in terms of the contours on the land surfaces.
Child labour started when population increased. as a result the wants/demands of people are also increasing.so to accomplish the rising wants child labour is rising too.
