Genetics explains why you look like your father, and if you don't, why you should. Water vapor gets together in a big cloud. When it gets big enough to be called a drop, it does. There is a tremendous weight pushing down on the center of the Earth because so many people are stomping around there these days. The cause of perfume disappearing is evaporation.
Evaporation gets blamed for a lot of things, people forget to put the top on.
You can listen to thunder and tell how close you came to getting hit. If you don't hear it, you got hit, so never mind. Plus, you can learn all about the most colorful destination on the planet. The Crayola Factory. No other skill has as great an impact on a child's ability to succeed in school and beyond.