<human>:  What is the chemical process of photosynthesis?
<bot>: Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things. The overall equation for photosynthesis is: 6CO2 + 6H2O ---> C6H12O6 + 6O2