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6 marksEcology, Niches, and Interactions

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

Figure 3 shows the relationship between aquatic pH levels and the number of fish present.

Provide an explanation for the distribution pattern of fish shown across the pH gradient in Figure 3.

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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(b)(iii)Explain why the discharge of untreated sewage into aquatic ecosystems should NOT be encouraged.[6 marks]

More practice: the rest of this paper · more Ecology, Niches, and Interactions questions · all CAPE Environmental Science Unit 1 past papers