Answer:
What is it that no man ever saw, which never was, but always will be?
What instrument can make any sound and be heard but not touched or seen?
Of these everyone has ten, part of two wholes at the arms end. What are they?
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
What kind of nail can be grown?
What never gets any wetter no matter how hard it rains?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?