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4 marksWater and Land Pollution

CAPE Environmental Science Unit 2 · 2005 · Paper 1 · Question 11(b)

Explain the significance of the BOD value of 5 mg/l given.

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Other parts of this question

  1. 11(a)State TWO other types of readings or parameters that could have been obtained to determine the water quality of the river.[2 marks]
  2. 11(c)State TWO sources of water pollutants that cause high BOD.[2 marks]
  3. 11(d)State ONE environmental impact of high BOD values in water.[1 mark]

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