(a) Draw a sketch map of Africa. On the map, mark and name: (i) the...
(a) Draw a sketch map of Africa. On the map, mark and name:
(i) the Rivers Niger and Nile;
(ii) two areas of irrigation agriculture along each river.
(b) Outline three contributions of irrigation agriculture to any of the area shown in (a)(ii) above.
(c) Highlight three problems facing irrigation agriculture in the area chosen in (b) above.
Explanation
(b) Contributions of irrigation agriculture to the area
(a) Provision of food
(b) Establishment of farm projects
(c) Revenue to government
(d) Enables continuous cropping throughout the year
(e) Water is provided for small scale farming
(f) Employment opportunities
(g) Income to farmers
(h) Raw materials for industries
(i) Tourist attraction
(j) Foreign exchange earning
(c) Problems facing irrigation agriculture
(1) Excessive evaporation causes salinity
(2) High cost of dam construction
(3) Fluctuation of water volume
(4) Displacement of people
(5) irrigation equipment are expensive to maintain
(6) Existence of water borne diseases
(7) Collapse or failure of dam
(8) Silting of dams
(9) Growth of aquatic dams.