(a) State three ways in which human activities affect the composition of the atmosphere

(b) Describe the physical changes that are likely to be associated with the increasing reduction of the ozone layer in the upper atmosphere 
 

(a) What is a conurbation?

(b) Name one conurbation each in three different countries

(c) State four problems of a conurbation

(d) Suggest any three solutions to the problems mentioned in (c) above

(a) Using specific examples, describe any four factors influencing the location of manufacturing industries in developing countries

(b) Outline four problems associated with the establishment of heavy industries in West Africa

(c) Suggest solution to these problems 
 

(a) For any two of the following countries: Nigeria, Ghana, Sierra Leone and The Gambia, list
(i) two commodities exported to countries outside West Africa
(ii) two commodities imported from those foreign countries

(b) Choose one of the countries in (a) above and name three of its most active foreign customers

(c) What four measures can a country which experiences Unfavourable balance of trade take to remedy the situation? 

(a) On a sketch map of Nigeria, locate and name:
(i) two game reserves
(ii) one important town in each of the areas in (a) above

(b) State three ways by which tourism has affected the lives of the people in any one of the areas identified in (a) above

(c) Suggest three ways by which tourism may be boosted in Nigeria