(a) On a sketch map of Nigeria locate and name any four vegetation belts (b)...

Explanation

(b) Four ways in which the forest vegetation contributes to the economy of the country are:

(i) Provision of timber for construction of houses and furniture

(ii) Provision of foreign exchange earnings from the export of timber

(iii) Forest vegetation provides jobs to many people, e.g forest guards, lumbermen

(iv) Forest vegetation also provides medicinal herbs for the pharmaceutical industries.

(c) Four problems associated with exploitation of forest vegetation include:

(i) Heterogeneous nature of trees

(ii) Lack of motorable roads

(iii) High cost of survey to determine economic trees

(iv) Felling of timber is risky as many people have lost their lives in the process