a. Transpiration
This process is responsible for loss of water from aerial parts of plants.
b. Photosynthesis
This process is responsible for use of oxygen, water and sunlight to prepare food (glucose).
c. Cellular respiration
This process is involved in breakdown of glucose with help of oxygen, and the end products are CO₂ and energy.
d. Evaporation
It is a simple process related to conversion of water from liquid phase to vapours.
Conclusion
Thus it is concluded from above explanation that cellular respiration is responsible for returning carbon into atmosphere.
