A vibration is a motion that cannot make up its mind which way it wants to go. Genetics explain why you look like your father and if you don't why you should.
Vacuums are nothings.
We only mention them to let them know we know they're there. Some oxygen molecules help fires burn while others help make water, so sometimes it's brother against brother. We say the cause of perfume disappearing is evaporation . Evaporation gets blamed for a lot of things people forget to put the top on. To most people solutions mean finding the answers.