Answer:
I break down buildings, I crumble mountains but you can't see me. What am I?
What has no beginning, end, or middle?
What loses its head in the morning but gets it back at night?
my rings are not worth much but they do tell my age.
I fly forever Rest never.
A man goes out in heavy rain with nothing to protect him from it. His hair doesn't get wet. How does he do that?