Who create the cloud?

This illustration shows the water circulation. 

The water is in the lake and then go through the forest, the trees, just like goes into the "factory" (I drew them as some houses). Under the natural reaction, the "factories" make the water change into the vapour, then they go into the sky to become the gas and then gather together as the cloud. Lastly, it becomes the water again to back into the lake and the land as the rain.

There is an animation to show this process below.