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7 (a) Explain the pattern in the graph between 4 minutes and 20 minutes. The quality of written communication will be assessed in your answer to this question. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [6]

Š OCR 2013

Turn over for the remainder of question 4


B3 question 4 (2)