It has no mass! Matter is something that CANNOT! have two things at the same spot at the same time. Say you are sitting in a desk at school, no matter where someone else sits, (by you, on top of you, on the desk) they are still not taking up the same space as you are. Sound though, can travel everywhere making it difficult for it to take up only one spot at a time. :)
Another word for clever is smar tand intelligente
Starvation, poor living conditions, poor working conditions, forced labor, scientific experiments that would lead them to painful deaths, and torture.
