The given illustration demonstrates the circulation of water in nature.
Overall, it can be clearly seen that there are three primary stages involved in the process, starting with the evaporation of water and the formation of clouds, and ending with the intrusion of saltwater into freshwater sources.
In the initial stage, water evaporates into the atmosphere as a result of the sun’s heat. Besides, it is estimated that a significant portion of the water vapour, which is around 80%, comes from the ocean. Following this, a cloud is formed by the condensation of water vapour.
In the subsequent stage, the condensed clouds release precipitation in the form of rain and snow. Water in the precipitation partly flows into the lakes or is absorbed into the ground. After that, the surface runoff, which is made from rainwater, creates the groundwater and then flows back to the ocean, reaching the impervious layer of the earth. Finally, saltwater intrusion is shown to take place just before groundwater passes into the oceans, thereby completing the cycle.
