The table below illustrates a basic economic principle in agriculture. Use it to answer questions 6(a) to 6(a)(iii)

Quality of fertilizer used (bag	Tomato yield (kg)
0	2
2	6
4	9
6	11
8	10
10	5
12	4

(a)(i) On the graph sheet provided, plot a graph showing the relationship between fertilizer used and tomato yield. Use a scale of 2 cm to 2 units on the x-axis and 2 cm to 2 units on the y-axis.
(ii) Describe the relationship between the fertilizer used and tomato yield.
(iii) Suggest the most appropriate quantity of fertilizer to be applied on the tomato farm.
(b) State three effects of subsidy withdrawal on agricultural production.
(c) List four print media that could be used to disseminate information about a new variety of maize to farmers.
(d) Name two insect pests each of the following crops: (i) maize; (ii) orange.