(a) Distinguish between an ecosystem and a food chain

(b) Explain the interdependence of the biotic and abiotic components of the environment 

 Write explanatory notes on each of the following
(a) deforestation
(b) drought

 

 (a) Explain the term migration and describe any three forms it may take

(b) State any four factors that may be responsible for migration

(c) Outline any three advantages and three disadvantages of any one type of migration mentioned in (a) above. 
 

Highlight the relative contributions of roads and railways to national development in any country of your choice 
 

(a) Explain the term manufacturing industry

(b) Highlight the characteristic features of manufacturing industries in Tropical African countries

(c) Give any four reasons why countries embark on industrialization