Thursday, August 19, 2010

chapter 8 : essay question

1 (a) Explain what is meant by

(i) pollution [2 marks]

(ii) biodegradable pollutants [2 marks]

(iii) nonbiodegradable pollutants [2 marks]

(b) State some pollution problems caused by human activities and suggest ways to prevent them. [14 marks]














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