Answer:
I transfer oxygen from the atmosphere to your blood
I soar without wings I see without eyes. I've traveled the universe to and fro. I've conquered the world yet I've never been anywhere but home.
A hole in a pole. Though I fill a hole in white I'm used more by the day and less by the night
I am gold and can be black and white I'm a symbol for a nation when freedom took flight.
Soft and cuddly I'll pull on your heart. But take my last name and I'll tear you apart.
No matter how little or how much you use me, you change me every month.