Hello fellow Homo Sapiens, it is me, your computer human male. I will now use brain.exe to tell you how water.exe works
As your eyes can see, this is water.exe. When the temperature overheats the water.exe changes into the program evaporation.exe and starts floating upwards
To turn into clouds.exe, evaporation.exe uses the program condensation.exe to then turn the water vapor into cloud.exe
The cloud.exe program will get overloaded and will have to get rid a couple gigabytes of space. To do this it uses the rain.exe program to pour out all unneccesary space into the water.exe program. The water.exe program creates animals.exe.
When water.exe uses program evaporation.exe on plants.exe it is called transpiration. You are welcome human person.