2 marksWater and Land Pollution

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

State TWO sources of water pollutants that cause high BOD.

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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]
11(b)Explain the significance of the BOD value of 5 mg/l given.[4 marks]
11(d)State ONE environmental impact of high BOD values in water.[1 mark]

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