CSEC Chemistry · May/June 2009 · Paper 2 · Question 7(a)(ii)
State THREE reasons why humus is an important component of soil.
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Practise this questionOther parts of this question
- 7(a)(i)What is meant by the term 'humus' as it relates to soil?[4 marks]
- 7(b)For which ions is the student MOST likely testing?[1 mark]
- 7(c)Suggest ONE advantage and ONE disadvantage EACH of biological and chemical control of pests.[4 marks]
- 7(d)(i)What is meant by the term 'hydroponics'?[2 marks]
- 7(d)(ii)Advise Mrs. Wills on TWO advantages and TWO limitations of setting up such a farm.[4 marks]
More practice: the rest of this paper · more Impact of Metals on Living Systems and the Environment questions · all CSEC Chemistry past papers