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4 marksPollution Concepts, Pathways, and Receptors

CAPE Environmental Science Unit 2 · 2021 · Paper 2 · Question 6(a)(iii)

A diagram shows a farm ecosystem where pesticides are sprayed onto crops to control pests.

In Figure 6, the numbers in brackets refer to the concentration of the pesticide found in each organism. Using this information, draw a flow chart to illustrate the concept of biomagnification on this farm.

This question uses a figure or table from the paper — you'll see it when you practise.

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Other parts of this question

  1. 6(a)(i)Identify any THREE receptors for the pesticide that was sprayed on the farm in Figure 6.[3 marks]
  2. 6(a)(ii)Define the term 'biomagnification'.[2 marks]
  3. 6(b)(i)The farmer on the farm in Figure 6 is concerned about pesticides getting into the stream. Explain how pesticides may get into the stream even though the farmer…[3 marks]
  4. 6(b)(ii)State THREE steps that may be taken to determine whether the pesticide is entering the stream.[3 marks]
  5. 6(b)(iii)Discuss ONE mitigative method to prevent pesticide pollution in the stream.[5 marks]

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