The process of photosynthesis is critical for food webs as it converts solar energy into chemical energy stored in glucose, forming the base of most ecosystems. In this process, plants and some microorganisms use sunlight, carbon dioxide, and water to produce oxygen and organic compounds. These compounds serve as food for herbivores, which then become prey for carnivores, establishing a complex food web. Additionally, photosynthesis contributes to the global oxygen supply, essential for the survival of aerobic organisms. Consequently, it plays a foundational role in supporting life on Earth and driving ecosystem productivity.