Plants use the process of photosynthesis to make their food. This fascinating process occurs primarily in the chloroplasts of plant cells, where chlorophyll captures sunlight. Using sunlight, carbon dioxide from the air, and water from the soil, plants convert these ingredients into glucose and oxygen. The glucose produced serves as energy for growth, reproduction, and cellular functions, while the oxygen is released into the atmosphere, benefiting all aerobic life forms. Photosynthesis is vital not only for individual plants but also for the Earth's ecosystems, supporting life across various trophic levels.