Answer:
He has one and a person has two. A citizen has three. And a human being has four. A personality has five. And an inhabitant of earth has six.
No matter how little or how much you use me, you change me every month.
My first is nothing but a nameอพ my second is more smallอพ my whole is of so little fame it has no name at all.
A great mysterious place that the bold have been known to journey into.
What's a place you have left but didn't enter?
What never gets any wetter no matter how hard it rains?