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3 marksEcosystem Dynamics and Community Stability

CAPE Environmental Science Unit 1 · 2015 · Paper 2 · Question 4(c)(iii)

Figure 4 shows how the population of a native species and an introduced species in a country changed over a period of seven years.

Calculate the average annual decrease in population of the native species for the period represented in Figure 4.

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Other parts of this question

  1. 4(a)(i)Define the term 'per capita greenhouse gas emission'.[2 marks]
  2. 4(a)(ii)Explain why people should be concerned about the level of greenhouse gas emissions in the atmosphere.[3 marks]
  3. 4(a)(iii)Identify the country, Country B or Country C, in which greenhouse gases are likely to have the greatest impact AND use the information in Table 4 to justify…[4 marks]
  4. 4(b)Discuss TWO ways by which an increase in the fertility rate of a country may affect a country's ability to achieve sustainable development.[4 marks]
  5. 4(c)(i)State the trend in the population of the native species AND the population of introduced species illustrated in Figure 4.[2 marks]
  6. 4(c)(ii)Suggest ONE reason for the trend observed for the native species in Figure 4.[2 marks]

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