The newest 11 of 11 written questions. Open one to see it on the real paper.
Name the organisms that decompose waste.
See it on the paper →List two products of decomposition.
See it on the paper →List four factors that affect the rate of decomposition.
See it on the paper →State why trees are a carbon sink.
See it on the paper →The diagram shows part of the carbon cycle. (a) State the processes at A, B and C. A .................................................................................... B .................................................................................... C ............................................................
See it on the paper →State why trees are a carbon sink. Section B
See it on the paper →three processes that add carbon to the atmosphere.
See it on the paper →Complete the diagram by adding the words to the boxes. carbon dioxide oxygen sunlight water
See it on the paper →An accessible first question to the paper; most candidates achieved full credit, a few incorrectly matched oxygen and carbon dioxide.
— Examiner report, October/November 2021, 0680/12 Q1(a) (Cambridge)
Responses displayed a good understanding of the carbon cycle and a correct interpretation of the diagram. Decomposition was the most challenging process to name.
— Examiner report, May/June 2021, 0680/12 Q6(a) (Cambridge)
This question asked for impacts of urbanisation on the carbon cycle. Many responses correctly identified the increased use of fossil fuels as increasing the levels of atmospheric carbon dioxide and/or the loss of vegetation meaning less absorption. Fewer responses considered other parts of the carbon cycle such as the loss/exploitation of carbon sinks.
— Examiner report, May/June 2021, 0680/12 Q6(c) (Cambridge)
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the names of processes A, B, C and D.
the impacts of urbanisation on the carbon cycle.
See it on the paper →Identify the parts of the diagram labelled A, B and C. A B C
See it on the paper →