Quelpr
2 marksWater and the Aquatic Environment

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

Water from rainfall is collected from the roof in containers. Name TWO impurities that may be present in this water.

The mark scheme is shown once you've answered.

Practise this question

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(h)Suggest TWO ways by which Mrs. Smith can make the water collected in the containers safe for drinking.[2 marks]

More practice: the rest of this paper · more Water and the Aquatic Environment questions · all CSEC Integrated Science past papers