Biology 5090 · O Level · Nutrient cycles

Nutrient cycles — practice question

The diagram illustrates a section of the carbon cycle. Which row correctly identifies processes W, X, Y and Z?

  • AW combustion, X respiration, Y respiration, Z photosynthesis
  • BW combustion, X photosynthesis, Y photosynthesis, Z respiration
  • CW respiration, X combustion, Y respiration, Z photosynthesis
  • DW respiration, X photosynthesis, Y combustion, Z photosynthesis

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