First of all, hello! I hope you are having an amazing day, if not, don’t worry it will be better.
So, here’s the answer:
Photosynthesis is the process of producing food by the leaves of the plants with the help of sunlight.
Cellular respiration is the process gaining energy through burning nutrients in the cells.
So, basically both photosynthesis and cellular respiration helps produce oxygen and energy.
Thanks! Hope that helps. ❤️❤️