CSEC Human and Social Biology · January 2012 · Paper 2 · Question 1(b)
State TWO agricultural practices that could lead to water contamination.
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Practise this questionOther parts of this question
- 1(a)Fill in the blanks using terms from the list (evaporates, condenses, evaporation, condensation) to describe water vapour formation and cooling.[2 marks]
- 1(c)Identify TWO diseases transmitted through contaminated water.[2 marks]
- 1(d)(i)Using the provided grid in Figure 1, plot a histogram displaying the data presented in Table 1.[3 marks]
- 1(d)(ii)Based on the information in Table 1, explain the relationship between levels of pollutants and the occurrence of cancer.[2 marks]
- 1(d)(iii)Provide ONE explanation for the significant rise in cancer cases between 2000 and 2009 relative to the modest 2% rise in pollutants.[2 marks]
- 1(e)(i)State the objective of the experiment shown in Figure 2.[1 mark]
- 1(e)(ii)Identify ONE hazard associated with performing this microbiological culturing procedure.[1 mark]
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