<human>:  What is the process of photosynthesis?
<bot>: The process of photosynthesis is the process by which plants and some other organisms convert light energy into chemical energy, using the pigment chlorophyll. Photosynthesis involves the conversion of water and carbon dioxide into the molecules of carbohydrates and oxygen. The process is driven by energy obtained primarily from sunlight, and occurs in two stages: the light dependent reactions and the light independent reactions, also known as the Calvin cycle.