Answer:
How can a pants pocket be empty, but still have something in it?
It describes an era in history during which lights was hard to come by.
Why do all kids want to be an astronaut?
What did Adam and Eve lack that everyone else has?
What do you do with a dead chemist?
You throw me out when you use me and take me in when you are done.
Funny
Animal
Difficult
Easy
Food
Kids
Logic
What am I?