Have you ever tried eating while your nose was stuffed up and you could barely breathe out of it? Its a similar feeling to having emphysema, the not being able to breathe very well. Except for people...
well most things in the world start as a liquid. What most do is but in a"glass oven" it harden in the mold and you have the glass that you seetoday. In other words is it goes from liquid to solid....