Answer:
You can always see it, but it's too far away to touch. Mountains rest on it, and at sea it surrounds you. What is it?
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.
You will find me with four legs, but no hair. People ride me for hours, but I don't go anywhere without needing to be tugged. Jerked or turned on, I always manage to be ready for work.
It doesn't live within a house, nor does it live without. Most will use it when they come in, and again when they go out.
You can only have it once you have given it.
What covers its face with its hands, speaks no language, yet most known what it's saying?