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3 marksWater and Land Pollution

CAPE Environmental Science Unit 2 · 2004 · Paper 1 · Question 12(b)

Outline ONE process that has caused the change in dissolved oxygen concentration.

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Other parts of this question

  1. 12(a)Suggest TWO reasons for the change in dissolved oxygen concentration observed beyond 20 km.[4 marks]
  2. 12(c)What is the likely effect on organisms inhabiting the river between 40 km and 100 km?[2 marks]

More practice: the rest of this paper · more Water and Land Pollution questions · all CAPE Environmental Science Unit 2 past papers