(a) (i) Name the two elements that combine to form water.
(ii) Write a balanced chemical equation to show how the water is formed from the named elements

(b) State two ways of maintaining a balance in an ecosystem.
(c) (i) What is a fertile soil?
(ii) State two factors that cause loss of soil fertility.

(d) Classify the following items as magnetic or non-magnetic substance:
wood, steel blade, rubber and glass jar.