Answer:
I tremble at each breath of air and yet can heaviest burdens bear.
I open to close but I close to open. I'm surrounded by water but I'm never soaking. What am I?
What is the difference between a poorly dressed man on a bike, and a well-dressed man on a unicycle?
What is the most slipperiest country in the world?
I am the same written forward backward and upside down.
The warmer I am the fresher I am.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic