Biological processes are the natural activities that occur within living organisms, allowing them to grow, reproduce, and respond to their environment. These processes include essential functions like metabolism, where cells convert food into energy, and cell division, which helps organisms grow and repair tissues. Another important biological process is photosynthesis, which occurs in plants. During photosynthesis, plants use sunlight, carbon dioxide, and water to produce their own food and release oxygen. This process is vital for life on Earth, as it provides energy for plants and oxygen for animals and humans to breathe.