(b) Three ways in which climate affects dams in West Africa include:
(i) High rainfall increases the volume of water in the rivers while low rainfall lowers the amount of rainfall in rivers
(ii) High temperature tends to evaporate water from dams
(iii) Period of seasons, long dry season tends to reduce the volume of water in the rivers.
(c) Three advantages of dams to West Africa are:
(i) Generation of Hydro-Electric Power (H.E.P)
(ii) For irrigation purposes
(iii) It improves fishing and water navigation.
Three disadvantages of dams to West Africa are:
(i) Shortage of water in dam disrupts H.E.P output
(ii) It leads to low volume of water in rivers which hinders river navigation
(iii) Collapse of dams can result in urban flooding destroying properties and killing people.