What role does the sun play in the formation of rain

Not my best subject, but I believe that the heat of the sun evaporates the water from other rain storms that had happened before. Once the water evaporates it gets formed into clouds (rain clouds) and after a while it get heavy or a bit cold so the cloud releases the water it held and the water being dropped is rain. I'm sorry if this is wrong this is all I can remember, but I believe it should be enough for elementary school.

No because it not possibly

Answer ozone (o3) is made of three atoms of oxygen, it is a molecule;