Answer:
I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?
What word begins and ends with an E, but only has one letter?
The more you take away from me the bigger I shall get.
What language does a billboard speak?
I make you weak at the worst of all times. I keep you safe I keep you fine. I make your hands sweat and your heart grow cold. I visit the weak but seldom the bold.
Give it food and it will live, give it water and it will die.