The water of the seas and oceans evaporates and rises into the atmosphere. In contact with cold air bags, water vapor condenses into droplets, which, driven by winds, come together and form clouds that eventually pouring its contents on the earth as rain, snow or hail.
The earth has a limited amount of water. That water keeps going around and around in what we call the "Water Cycle". This cycle is made up of a few main parts: 1-.evaporation (and transpiration) 2-.condensation 3-.precipitation 4-.collection