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6 marksHuman Interaction and Ecosystem Investigation

CAPE Environmental Science Unit 1 · 2013 · Paper 2 · Question 2(b)(iii)

Figure 2 displays the percentage impact of various anthropogenic activities on an aquatic ecosystem compared to a terrestrial ecosystem.

Explain why the discharge of untreated sewage into aquatic ecosystems should NOT be encouraged.

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Other parts of this question

  1. 2(a)Outline the role played by natural selection in the evolution and adaptation of a species.[3 marks]
  2. 2(b)(i)State THREE deductions that can be drawn from Figure 2.[3 marks]
  3. 2(b)(ii)Using data values from Figure 2, determine which two anthropogenic activities combined have the HIGHEST impact on the terrestrial ecosystem.[2 marks]
  4. 2(c)Provide an explanation for the distribution pattern of fish shown across the pH gradient in Figure 3.[6 marks]

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