Quelpr
1 markEcosystem Dynamics and Community Stability

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

Figure 2 illustrates the change in population size of iguanas in a mangrove habitat over a 12-year period.

What is the population of iguanas in Year 2?

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 1(a)(i)Name the type of ecological pyramid shown in Figure 1.[1 mark]
  2. 1(a)(ii)Use the information in Figure 1 to calculate the amount of energy that is available at the level of the producers. Show all working.[3 marks]
  3. 1(b)Outline THREE ways in which the phosphorus cycle may be impacted by the activities of humans.[6 marks]
  4. 1(c)(ii)Define the term 'carrying capacity' AND use Figure 2 to estimate the carrying capacity of the mangrove habitat.[3 marks]
  5. 1(c)(iii)Discuss TWO factors that may influence population size at the carrying capacity.[6 marks]

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