(a) What is depreciation in agricultural production?                       

(b)  Distinguish between the following pairs of terms as used in agricultural production:
(i)  farm records and farm accounts;
(ii)  credit and subsidy;
(iii) assets and liabilities.                                              

(c)  State five problems of agricultural extension in West Africa.              

(d)  Enumerate five factors that affect the supply of cassava in West Africa