Answer:
Open me, and you can't see me without a mirror. Close me and you can't see me at all. What am I?
What is black and white and red all over?
I flow from the Homerβs mouth when he sees doughnuts.
Walk on the living, they donβt even mumble. Walk on the dead, they mutter and grumble. What are they?
I have cities without people forests without trees and oceans without water. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.