Answer:
I look at you, you look at me, I raise my right, you raise your left
The buyer doesn’t want it, the producer doesn’t need it and the user doesn’t know their using it.
I'm a god, a planet, and measurer of heat. Who am I?
I saw the dead bring forth the living. I saw the living bring forth the dead. What did I see?
I shave several times a day, yet I still have a beard. Who am I?
I am a room that has a roof but no walls. What am I?