2 marksWater and Waste Management
CSEC Human and Social Biology · January 2009 · Paper 2 · Question 10(a)
Identify the two main constituents of sewage.
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Practise this questionOther parts of this question
- 10(b)Explain the biological and physical processes involved in transforming wastewater into clean, safe effluent.[5 marks]
- 10(c)(i)Identify one source of sulphur dioxide responsible for reducing smog.[1 mark]
- 10(c)(ii)Describe one harmful effect of reducing smog and one harmful effect of photochemical smog on human health.[2 marks]
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