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4 marksEnvironmental Impacts and Threats to Agriculture

CAPE Environmental Science Unit 2 · 2010 · Paper 2 · Question 1(b)

The farmer on a nearby farm decided to continue to employ chemical control methods. Why do you think that the farmer made this decision in spite of his knowledge of biological pest control? Suggest TWO reasons for your answer.

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Other parts of this question

  1. 1(a)(i)Describe the trend shown in Figure 1.[4 marks]
  2. 1(a)(ii)State THREE pieces of information that are vital when employing this method of pest control.[3 marks]
  3. 1(a)(iii)Suggest THREE reasons why this method of pest control was recommended.[6 marks]
  4. 1(a)(iv)Why would the agriculture officer advise the farmer to try always to maintain the biological control agent at the level C shown in Figure 1?[3 marks]

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