The correct answer is - water cycle.
The water cycle represents the movement of the water between the different spheres on the Earth, including the atmosphere, lithosphere, hydrosphere, and biosphere. This cycle has a circular movement. The water on the Earth is heated up by the sunlight and it starts to evaporate, turning into gas, or rather water vapor. The water vapor is very light so it moves up in the atmosphere. Once it reaches the colder parts of the atmosphere, the water vapor condensates, creating small drops of water and clouds. The gravity makes the drops fall on the surface of the Earth in the form of precipitation. That water gets inside the ground, is consumed by the living organisms, and gets into the water bodies, and from all of them it evaporates again.
