Chemistry 0620 · IGCSE · Air quality and climate

Air quality and climate — practice question

A section of the carbon cycle is shown. Which processes are P, Q and R?

  • AP: decomposition, Q: respiration, R: photosynthesis
  • BP: respiration, Q: photosynthesis, R: decomposition
  • CP: respiration, Q: decomposition, R: photosynthesis
  • DP: photosynthesis, Q: respiration, R: decomposition

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