Answer:
I am free for the taking. Through all of your life, though given but once at birth. I am less than nothing in weight, but will fell the strongest of you if held.
It's been around for millions of years, but is never more than a month old. What is it?
What has one eye but cannot see?
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
What has a bottom right at the top?
A word of five letters, Upside down is the same, A shark does this, But itβs not to blame. What is the word?