Answer:
I am a protector. I sit on a bridge. One person can see right through me while others wonder what I hide.
I can be swallowed But I can also swallow you.
Without me everyone would lose their head.
I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?
I am the kind of a tree that is carried in your hand. What am I?
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic