(b) Three effects of mountains on the climate of Africa
(i) It lowers the mean annual temperature, e.g East African highlands
(ii) It leads to heavier rainfall on the wind-ward side of highlands, e.g East of Drakensberg
(iii) It leads to scanty rainfall on the leeward side of mountains
(c) Four ways in which the highlands of Africa are of economic importance are:
(i) They provide a rich soil for agriculture
(ii) They serve as a source of minerals
(iii) They can serve to generate H.E.P
(iv) They serve as tourist centres