Answer:
Without this, H2O would just be 2O
What time of day, when written in capital letters, is the same forwards, backwards, and upside down?
What instrument can make any sound and be heard but not touched or seen?
Brings you May flowers
Raise your right appendage high above your head. Turn your head to the right and you will smell this.
It rows quickly with four oars but never comes out from under his own roof. What is it?