CSEC Human and Social Biology · January 2013 · Paper 2 · Question 6(b)
Distinguish between the terms 'disinfectant' and 'antiseptic'.
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- 6(a)Define the term 'pollutant' and identify TWO sources of chemical pollutants.[4 marks]
- 6(c)Explain what the residents were trying to achieve by treating the water with bleach and why this treatment was NOT enough to ensure that the water was safe for…[5 marks]
- 6(d)Discuss how landfills in the Caribbean are NOT as effective today for disposing of refuse as they were many years ago.[4 marks]
More practice: the rest of this paper · more Vectors, Microorganism Control and Immunity questions · all CSEC Human and Social Biology past papers