What Am I Riddles

Question: I am around everything, everything that lives because of me. What am I?

Question: I am god to many people despite not being a spirit. I am what people kill over, lust over, and fight over. I am not God or the Devil, but a mere material that people need endlessly. What am I?

Question: I open to close but I close to open.
I'm surrounded by water but I'm never soaking.

What am I?

Question: Everyone has me but nobody can lose me.What am I?

Question: You use me from your head to your toes,
the more I work the thinner I grow.

What am I?