What Am I Riddles

Question: The more of me you have, the longer your life.
The more of me you have, the less you have left.

What am I?

Question: You put me on a table and cut me, but you don't eat me.

What am I?

Question: What is one in every doll, in every doll, in every doll?

Question: My eye is dark,
and my mane is yellow.
You man see me at the mart,
and I'm probably taller than you fellow.

What am I?

Question: My shallow hills are the faces of kings.
My horizon is always near.
My music sends men to the grave.
My absence sends men to work.

What am I?