2. What do we mean when we say that 'Constitution is a living document?

It is a document that is meant to be changed over time and that is not supposed to become outdated as it will be modified via the ways allowed by it.

well it depends i think people around the world are coming around to gay marriage. but if you are talking abortion then wow, so much to talk about. such as men thinking they have the right to choose if women can, the fact there are health concerns if the women can't get one, and many more arguments to discuss. so i would definitely say abortion would be a much more interesting topic.