(a) (i) State the difference between organic fertilizer and inorganic fertilizer
(ii) State two effects of inorganic fertilizer on the environment
(b) Classify the following substances as acids or bases.
(i) unripe lemon juice;
(ii) wood ash;
(iii) liquid in a car battery;
(iv) bicarbonate of soda

(c) (i) What is a fruit?
(ii) State two differences between a fruit and a seed.

(d) State the effect of heat on each of the following substances:
(i) plastics
(ii) alcohol
(iii) metal rod