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3 marksEcosystem Dynamics and Community Stability

CAPE Environmental Science Unit 1 · 2014 · Paper 2 · Question 2(a)(ii)

Figure 2 presents a graph of a predator-prey relationship over a 7-month period.

Calculate the change in predator population size between Month 2 and Month 7.

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Other parts of this question

  1. 2(a)(i)Explain the trend observed in the population numbers of the predator and prey shown in the graph.[3 marks]
  2. 2(b)Explain the significance of natural selection in the evolution of species.[4 marks]
  3. 2(c)Explain TWO ways human activities disrupt the integrity of natural ecosystems.[4 marks]
  4. 2(d)(i)Using Figure 3, calculate the combined number of individuals of the TWO least collected species.[2 marks]
  5. 2(d)(ii)Using an appropriate formula, calculate the species diversity for the school garden.[4 marks]

More practice: the rest of this paper · more Ecosystem Dynamics and Community Stability questions · all CAPE Environmental Science Unit 1 past papers