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2 marksHuman Interaction and Ecosystem Investigation

CAPE Environmental Science Unit 1 · 2011 · Paper 2 · Question 6(d)(ii)

Figure 7 shows total suspended solids (TSS) in quarry effluent before and after passing through four successive settling ponds.

Calculate the percentage reduction in total suspended solids after effluent passes through two ponds.

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Other parts of this question

  1. 6(a)State one reason why natural resources should be conserved.[1 mark]
  2. 6(b)Explain how the practice of waste reduction and minimisation leads to natural resource conservation.[3 marks]
  3. 6(c)(i)Name two measures that can be used to encourage industries to practise waste reduction and minimisation.[2 marks]
  4. 6(c)(ii)Explain how one of the measures identified in (c)(i) persuades industries to practise waste reduction and minimisation.[4 marks]
  5. 6(c)(iii)Discuss one action that would support the effective implementation of these measures within the Caribbean.[3 marks]
  6. 6(d)(i)Calculate the percentage reduction in total suspended solids in the effluent after the entire treatment process.[3 marks]
  7. 6(d)(iii)State whether four settling ponds are necessary for adequate pollution control at this quarry, giving one reason to justify your answer.[2 marks]

More practice: the rest of this paper · more Human Interaction and Ecosystem Investigation questions · all CAPE Environmental Science Unit 1 past papers