The hydrological cycle is the continuous movement of water on, above, and below the surface of the Earth. It involves processes such as evaporation, where water turns into vapor and rises into the atmosphere, and condensation, where vapor cools and forms clouds. Eventually, water returns to the surface through precipitation, such as rain or snow. Once the water reaches the ground, it can either flow into rivers and lakes, infiltrate the soil, or evaporate back into the atmosphere. This cycle is essential for maintaining ecosystems, replenishing groundwater, and supporting life on Earth.