Photosynthesis is a process completed by plants in order to produce food for them to survive. This process occurs in a green organelle called the chloroplast, which is found in the plant cell, mostly in the leaves. The plant leaf uses carbon dioxide in the air, and water collected from the root in the soil in a reaction in the presence of sunlight in the chloroplast. It forms oxygen, which then enters our atmosphere, and glucose, which is the 'food' the plant uses in order to grow and survive. The overall word equation is :Carbon Dioxide + Water --- (sunlight) ---> Glucose + OxygenThe balanced chemical equation is:6CO2 + 6H2O --> C6H12O6 + 6O2