CSEC Biology · May/June 2009 · Paper 2 · Question 5(b)(iii)
Suggest TWO ways in which carbon dioxide levels can be controlled.
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Practise this questionOther parts of this question
- 5(a)Using a diagram, illustrate how any THREE named processes are involved in the recycling of carbon in nature.[6 marks]
- 5(b)(i)Sometimes human activity abnormally affects natural cycles. Suggest TWO ways in which human activity contributes to an abnormal rise in levels of atmospheric…[9 marks]
- 5(b)(ii)Suggest ONE likely consequence of abnormally high carbon dioxide levels on ecosystems.[9 marks]
More practice: the rest of this paper · more Human Impact on the Environment questions · all CSEC Biology past papers