Diagram : water cycle

The diagram below shows the water cycle, which is the continuous movement of water on, above and below the surface of the Earth.

The diagram illustrates the natural water cycle as a result of continuous movement of water on, above and below the surface of the earth.

In general, the process undergoes a series of steps with the evaporation of water from the ocean and absorption of water into the Earth layer.

To specify, in the first step, ocean contributes 80% of total water vapor in air. With sun light shining, water from the ocean vapors and condenses into cloud. Subsequently, as result of cloud formation, rain falls into lakes, mountains while snow, because of sun light, melts into water that goes into the Earth layer. Besides, part of ground water comes from trees' evaporation.  Such water from snow, rainfall from clouds, lakes and trees touches the earth layer and gradually reaches the underground level after a long time of absorption. Then, this water flows back into the ocean again, and then the water cycle repeats itself.

Strikingly, only by dint of the contribution from different natural sources can water be formed.