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(a) Identify in which filed the crop yield is more and why?
(b) Describe how the actions of insect pest can reduce crop yield.

(c) Suggest one advantage and disadvantage of using a predator to
control pests.

Q17. The Green Revolution was a period that began in the 1960s during which 4
agriculture in India was converted into a modern industrial system by the
adoption of technology, such as the use of high yielding variety (HYV)
seeds, mechanized farm tools, irrigation facilities, pesticides, and
fertilizers.
(a) Explain the three ways in which pests affect crops.
(b) Write any two objectives of crop variety improvement.
(c) Mention the desirable qualities of rice crop. (d) Using fertilizers in
farming is an example of
(i) No cost production
(ii) Low-cost production
(iii) High-cost production
(iv) None of these.
Q18. Christina has five chickens. 4

Here is some information about her chickens.