Answer:
I transfer oxygen from the atmosphere to your blood
What can you break even if you never touch it?
In buckles or lace I help set the pace. The farther you go the thinner I grow.
If you look, you cannot see me. And if you see me, you cannot see anything else. I can make anything you want happen, but later everything goes back to normal. What am I?
I am an activity dogs are very good at when a ball is thrown.
What never gets any wetter no matter how hard it rains?