Chemistry 0620 · IGCSE · Air quality and climate

Air quality and climate — practice question

A section of the carbon cycle is shown. What are processes 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

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI