(a) Write explanatory notes on any two of the following: (i) Population density; (ii) Birth rate; (iii) Optimum population.

(b) In what four ways can the problems of under population be solved? 

(a) List four modes of transportation.
(b) Identify four constraints to inland water navigation. 
(c) In what four ways can the constraints identified in (b) above be solved? 

(a) Outline two characteristic features of each of the following: (i) Cornubation; (ii) Megapolis.

(b) With specific examples, explain any six functions which settlements perform.

(a) Draw a sketch map of Nigeria. On the map, show and name: (i) Rivers Niger and Benue; (ii) Kainji Dam; (iii) i ) Abuja.
(b) Explain three factors which favour the development of hydro-electric power projects in Nigeria.
(c) State three economic benefits of the hydro-electric power projects.

(a) State two advantages of industrialization in Nigeria.
(b) Explain four problems that retard industrialization in Nigeria.
(c) In four ways, describe how the problems in (b) above can be solved.