Answer:
Often wandering the streets, this group of people cannot afford to be choosers.
What you do to determine the length of something
What is the middle of water but is not an island?
Man's most important invention.
Before Google, we actually had to physically look things up in this building full of knowledge.
It is something you will never see again.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?