Answer:
What has one eye but cannot see?
I build up castles. I tear down mountains. I make some men blind, but I help others to see. What am I?
I can wake you up in the morning but I require no electricity or winding.
What runs but never walks has a mouth but never talks has a head but never weeps has a bed but never sleeps?
An action done on mosquito bites
Give it food and it will live, give it water and it will die.