Answer:
Tear me off and scratch my head what once red is now black.
I'm written with two letters, said with one and seen with two. What am I?
I am round as an apple, deep as a cup. All the King's horses can't pull me up. What am I?
Upon your lonely journey I accompany you, whether you travel through endless mountains or seas of blue. Wherever you go, I keep your place. Lost you're not, when I'm embraced. What am I?
The warmer I am, the fresher I am. What am I?
I have feet on my head