Chemistry 0620 · IGCSE · Air quality and climate

Air quality and climate — practice question

The carbon cycle is illustrated. Which row gives the descriptions of processes X, Y and Z?

  • AX: respiration, Y: combustion, Z: photosynthesis
  • BX: respiration, Y: photosynthesis, Z: combustion
  • CX: photosynthesis, Y: combustion, Z: respiration
  • DX: photosynthesis, Y: respiration, Z: combustion

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