The diagrams give the information about several steps of hydrology's cycle which produces a rain. Overall, there are three stages which happen it naturally, then it begins from evaporation to the rainfall.
Initially, there is evaporation from sea, land, and river because of the heat from the sun. After that, the vapor concentrates on the air and transform into clouds. Then, the clouds moving to the highland since the wind push it. When the clouds reach a saturation point, the water will be fallen called rain or precipitation.
After precipitation, the water has several ways to reach the sea. First, it absorbs into porous rock and run slowly in the ground water and finally comes out in the sea, while cannot through the non-porous rock. Second, the water which is fall in the waterways will be following the river as main track until the sea. Eventually, it evaporates again to produce a cloud.