(b) Differences in relief and drainage between Chad Basin and Western Highlands:
(a) Chad Basin is a.lowland region while Western Highlands is a highland region
(b) Average elevation for Chad Basin is 45-60m while that of Western Highland is 300-600m
(c) Western Highlands is underlain by metamorphic rocks of basement complex while Chad Basin has sedimentary rocks.
(d) Chad Basin has inland drainage while rivers of the Western Highlands drain into the Atlantic ocean and the Niger valley.
(e) On the western highlands rivers flow southwards or northwards while in the Chad Basin, the rivers flow north-east wards.
(f) Areas around Lake Chad are swampy while swamps do not exist in the Western Highlands
(g) In the Chad Basin river include Hadeja, Yedseram, Komadugu-Gana, Yobe, etc while on the westerm highlands they include Osun, Ogun, Moslu, Ossa.
(c) Problems of development in the Chad Basin
(i) Harsh climate
(ii) Wind erosion
(iii) Pest and diseases
(iv) Scanty rainfall (65cm) leads to low agricultural production
(v) Poor transportation
(vi) Desert encroachment
(viii) Sparsity of population.