Answer:
I'm white, I'm round, but not always around. Sometimes you see me, sometimes you don't.
Used on a diamond and left on a board. It's great for a gymnast his grip to restore. What is it?
I grow for a surface, even if you cut me. I continue to grow even after death.
In the evening I'm long, in the morning I'm smallΝΎ When seen in a ballroom, I'm nothing at all.
I have an eye but cannot see, You'll head inside when you see me.
It rows quickly with four oars but never comes out from under his own roof. What is it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?