Evaporationg ets blamed for a lot of things people forget to put the top on. To most people solutions mean finding the answers. But to chemists solutions are things that are still all mixed up. I am not sure how clouds get formed. But the clouds know how to do it, and that is the important thing.
Water vapor gets together in a cloud.
When it is big enough to be called a drop, it does. Cyanide is so poisonous that one drop of it on a dog's tongue will kill the strongest man. Isotherms and isobars are even more important than their names sound. It is so hot in some places that the people there have to live in other places. Genetics explain why you look like your father and if you don't why you should.