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2 marksSexually Transmitted Infections and Chronic Diseases

CSEC Human and Social Biology · January 2012 · Paper 2 · Question 1(d)(iii)

Data showing percentage increase in environmental pollutants and cancers from 1940 to 2009.

Provide ONE explanation for the significant rise in cancer cases between 2000 and 2009 relative to the modest 2% rise in pollutants.

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Other parts of this question

  1. 1(a)Fill in the blanks using terms from the list (evaporates, condenses, evaporation, condensation) to describe water vapour formation and cooling.[2 marks]
  2. 1(b)State TWO agricultural practices that could lead to water contamination.[2 marks]
  3. 1(c)Identify TWO diseases transmitted through contaminated water.[2 marks]
  4. 1(d)(i)Using the provided grid in Figure 1, plot a histogram displaying the data presented in Table 1.[3 marks]
  5. 1(d)(ii)Based on the information in Table 1, explain the relationship between levels of pollutants and the occurrence of cancer.[2 marks]
  6. 1(e)(i)State the objective of the experiment shown in Figure 2.[1 mark]
  7. 1(e)(ii)Identify ONE hazard associated with performing this microbiological culturing procedure.[1 mark]

More practice: the rest of this paper · more Sexually Transmitted Infections and Chronic Diseases questions · all CSEC Human and Social Biology past papers