Answer:
What is something yet nothing, but if you fill it up it will disappear?
You can do this with your friends. You can do this with your nose. But don't do it with your friend's nose!
I'm a green veggie that looks like a tiny tree.
What falls down but never gets hurt?
What travels around the world without leaving the corner?
Which popular cheese is made backwards?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?