Answer:
Until I am measured, I am not known. Yet, how you miss me when I have flown. What Am I?
I'm written with two letters, said with one and seen with two. What am I?
I have no weight but I could destroy a mansion. What am I?
I fly when I'm born. I lie when I'm alive. I run when I'm dead. What am I?
I am the kind of a tree that is carried in your hand. What am I?
What did the grape do when he got stepped on?