The difference between C3 and C4 photosynthesis is that C3 photosynthesis uses a rubisco that binds to oxygen. Meanwhile C4 photosynthesis contains a different enzyme that binds to carbon dioxide, not oxygen. On the other hand CAM photosynthesis, carbon fixation occurs at night and the Calvin cycle occurs during the day. C3 photosynthesizing plants also benefit from a cool, moist environment with natural sunlight. Photorespiration will likely take place as the temperature rises, the heat will cause the stomata on the leaves to close to conserve water. Unlike C3 photosynthesis, C4 photosynthesis benefits from dry, hot and sunny conditions. At the same time, CAM photosynthesis takes advantage of hot, dry climates. Unlike C3 and C4, CAM photosynthesis allows carbon fixation only to