Answer:
What tree that definitely grows does not have a shadow and does not grow fruit?
Covered in stone and sun. It's home to many but also none. What is it?
What comes once in a minute, twice in a moment, but never in a thousand years?
I can be written, I can be spoken, I can be exposed, I can be broken.
Don't do this in the shallow end.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.