Answer:
I can be written, I can be spoken, I can be exposed, I can be broken.
Two people are born at the same moment, but they don't have the same birthdays. How could this be?
A nut cracker up in a tree.
I am the yellow hem of the sea's blue skirt.
You can see nothing else, When you look in my face, I will look you in the eye, And I will never lie.
What is lighter than what it is made of?