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3 marksEcosystem Dynamics and Community Stability

CAPE Environmental Science Unit 1 · 2016 · Paper 2 · Question 1(b)(i)

Figure 1 displays population variation curves over 15 months representing carrying capacity investigations by Student A and Student B for a species in a forest area.

State THREE deductions concerning the variation of the population of the species recorded by Student A.

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. 1(a)Distinguish between sedimentary and gaseous biogeochemical cycles, providing ONE example of each type.[6 marks]
  2. 1(b)(ii)Calculate the difference between the carrying capacity values obtained by Student A and Student B.[3 marks]
  3. 1(b)(iii)Suggest TWO reasons for the difference in carrying capacity estimates obtained by the two students.[4 marks]
  4. 1(c)Distinguish between intraspecific competition and interspecific competition, and explain why intraspecific competition is more intense.[4 marks]

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