In the subregion of west africa, which north-south distinction does not apply?

West Africa is also known as Western Africa. The northern section of west africa of semi arid terrain known as Sahel, a transitional zone between the savannahs and western sudan . Forest from a belt between the savannas and the southern coasts.The Atlantic ocean forms the western as well as the southern borders of the western african region.

Answermost of the time it would be ground into fine sediment,and sometimes they are carried away from the original location;