(b) Ways in which forest vegetation contribute to Nigerian economy:
(i) Provision of job opportunities for lumber men and forest guards.
(ii) provides wood which serves as firewood or fuel
(iii) Provides raw materials to industries, e.g palm oil for soap-making
(iv) provides revenue to government
(v) Provides foreign exchange earnings
(vi) Provision of timber for construction (vii) Provides income to lumber men and forest guards
(viii) Provides herbs for medicinal purposes
(ix) Some forest fruits serve as food
(x) Raffia palms are used for making baskets, bags, brooms, etc
(xi) Tourism and wild life
(xii) provides leaves for thatching wrapping, etc
(xiii) Trees are used for boat building
(xiv) Production of palm wine

(c) Problems that hindered the exploitation of forest vegetation In Nigeria
(i) Inadequate motorable roads (ii) Poor terrain
(iii) Depletion of natural vegetation (iv) inadequate capital
(v) Presence of heterogeneous trees species (vi) Inadequate technology for tree felling
(vii) Soil erosion/leaching (viii) High cost of survey to determine economic trees
(ix) Some heavy logs sink during transporting than on rivers (x) Risky nature of the felling trees.