The biological significance of the water cycle lies in its role in sustaining life and maintaining ecosystem functions. It involves processes like evaporation, condensation, precipitation, and infiltration, facilitating the movement of water through different environmental compartments. This cycle ensures the availability of freshwater for organisms, supports plant growth, and regulates temperature in various habitats. Furthermore, the water cycle helps distribute nutrients across ecosystems, supporting food webs and biodiversity. By influencing climate and weather patterns, the water cycle also plays a crucial role in shaping the natural landscape.