(a) Give four health benefits of water to humans
(b) (i) State two ways in which crop rotation is important in crop production
(ii) Distinguish between mixed cropping and mixed farming

(c) (i) What is a fuse?
(ii) Name the colour code of the wire on which a fuse is placed in a three-pin plug

(d) (i) In a tabular form, state three differences between osmosis and diffusion
(ii) State one way in which osmosis is similar to diffusion