Biological cycles refer to the natural processes that occur in living organisms and ecosystems, helping to maintain balance and support life. These cycles include the water cycle, carbon cycle, and nitrogen cycle, each playing a crucial role in the environment. For example, the water cycle involves the movement of water through evaporation, condensation, and precipitation, ensuring that ecosystems receive the moisture they need. Another important aspect of biological cycles is the food chain, which illustrates how energy and nutrients flow between different organisms. Producers, such as plants, convert sunlight into energy, while consumers, like animals, rely on these producers for food. Decomposers break down dead organisms, returning essential nutrients to the soil, thus completing the cycle.