Answer: Oxygen
Notes: Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of carbohydrates (sugar). The main product of photosynthesis is glucose, which is the molecule that produces energy to run the processes of the cell. Oxygen is mainly a byproduct of the process of photosynthesis. 6H2O (water) + 6CO2 (carbon dioxide) = C6H12O6 (glucose) + 6O2 (oxygen)
