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2 marksWater and the Aquatic Environment

CSEC Integrated Science · May/June 2010 · Paper 2 · Question 2(h)

Suggest TWO ways by which Mrs. Smith can make the water collected in the containers safe for drinking.

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Other parts of this question

  1. 2(a)Name TWO household pests that may be present in the dining room if left overnight as in Figure 3, and give a reason for their presence.[3 marks]
  2. 2(b)Describe ONE way in which the pests named in (a) affect humans.[2 marks]
  3. 2(c)Give TWO methods for controlling household pests.[2 marks]
  4. 2(d)Mosquitoes are carriers of dengue fever. Based on Figure 4 showing the Smiths' backyard, identify ONE object which may encourage mosquito breeding.[1 mark]
  5. 2(e)Suggest ONE way the Smiths may assist in reducing the incidence of dengue fever, given there is no medicine to treat the virus.[1 mark]
  6. 2(f)Name TWO other diseases spread by mosquitoes.[2 marks]
  7. 2(g)Water from rainfall is collected from the roof in containers. Name TWO impurities that may be present in this water.[2 marks]

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