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Chemistry · Oct / Nov 2017 · Paper 11 · Question 32

5070Air quality and climate

The diagram shows part of the carbon cycle. What are processes P, Q and R?

  1. AP combustion, Q photosynthesis, R respiration
  2. BP photosynthesis, Q combustion, R respiration
  3. CP respiration, Q combustion, R photosynthesis
  4. DP respiration, Q photosynthesis, R combustion

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Correct answer: D. P respiration, Q photosynthesis, R combustion

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