Answer:
It increases and decreases yet no one see it. It is not a fire and yet it can be quenched.
What has four legs, but can't walk?
How does the man in the moon cut his hair?
I have many letters, And though it's strange to say, I stay the same no matter how many I give away.
Idk
What never gets any wetter no matter how hard it rains?
Funny
Animal
Difficult
Easy
Food
Kids
Logic
What am I?