Answer:
What is often returned but is never borrowed?
I grow where no flower grows, where no light touches the walls, up or down, that I don't care, was here before people were.
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
What flies without wings?
Only one color, but not one size. Stuck at the bottom, yet easily flies. Present in sun, but not in rain. Doing no harm, and feeling no pain.
When you take away the whole from me there is always some left.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?