Wath is a photosytess

Photosynthesis is the process used by plants, algae, and cyanobacteria to convert light energy into chemical energy. This chemical energy is stored in the form of glucose (a sugar), which fuels the organisms' activities. Photosynthesis uses sunlight, water (H₂O), and carbon dioxide (CO₂) as inputs, and produces glucose (C₆H₁₂O₆) and oxygen (O₂) as outputs.