Answer:
What kind of apple isn’t an apple?
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
What do you have in December that you don't have in any other month?
You do this into someone's ear when you want to be discreet.
When it's dirty this should never be aired in public.
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?