Photosynthesis is a process used by plants, algae, and some bacteria to convert light energy, usually from the sun, into chemical energy in the form of glucose. This process involves capturing sunlight with pigments like chlorophyll, and using that energy to convert carbon dioxide from the air and water from the soil into glucose and oxygen. The overall chemical equation for photosynthesis is:
6 CO2 + 6 H2O + light energy → C6H12O6 + 6 O2
In simpler terms, photosynthesis is the way plants make food for themselves using sunlight, water, and carbon dioxide.