Photosynthesis is when plants take sunlight and use it to make sugar as a source of food, the formula for this process is 6 CO2 + 12 H2O → C6H12O6 + 6 O2 + 6 H2O in word terms Carbon dioxide + Water + Light energy → Glucose + Oxygen
Photosynthesis is the process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source. Most forms of photosynthesis release oxygen as a by product.