(a) Give two examples of each of the following classes of crops: (i) roots and tubers; (ii) oil crops; (iii) grain legumes; (iv)cereals. (b) State five diff...

(a) Give two examples of each of the following classes of crops:                             
            (i)   roots and tubers;
            (ii)  oil crops;
            (iii) grain legumes;
            (iv)cereals.                                                                       

(b) State five differences between the digestive system of a goat and a chicken.                                         

(c) Give five reasons why farmers keep records.