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This article provides a diagram of hydrological cycle.
The rain water that falls on the ground surface is divided into three parts:
They are:
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(i) One part directly returns to the air as water vapour by evaporation and transpiration from plants.
(ii) Another part flows over the surface in rivers and ultimately reaches sea or ocean.
(iii) The third part sinks into the ground and forms ground water. Some parts of ground water may come out upon the surface as springs or through well but a large part of it reaches sea from the sea the water again drawn into atmosphere evaporation thereby completing the hydrological cycle as shown in the Fig. 7.2.
