Final answer:
Carbon cycles through the biosphere in photosynthesis, respiration, and combustion, but not transpiration.
Step-by-step explanation:
The carbon cycle involves the movement of carbon through various processes in the biosphere. These processes include photosynthesis, respiration, combustion, and transpiration. However, carbon does not cycle through the biosphere through transpiration. Transpiration is the process by which plants release water vapor into the atmosphere, not carbon.