Water cycle , cycle that involves the continuous circulation of water in the Earth-atmosphere system. Of the many processes involved in the water cycle , the most important are evaporation, transpiration, condensation, precipitation, and runoff. The total amount of water remains essentially constant. Master the Water Cycle -definition, key steps, and real-life facts. Unlock easy learning with Vedantu. Start your journey today! The water cycle is a vital natural process that supports life on Earth. To know more about biology topics visit Tutoroot blog section. The water cycle or hydrologic cycle , is a continuous and natural process that circulates water between the surface of the Earth, the atmosphere, and back again. The water cycle step s evaporation, condensation, precipitation, runoff, and infiltration. The water cycle sustains life by replenishing water sources and maintains hydrological balance on Earth. In this article, we will explain the water cycle steps, the water cycle diagram, and its importance in maintaining Earth’s ecosystems.