Answer:
The day is their night and the night is their day, when I shout and they shout back I run away.
You can't keep this until you have given it. What is it?
What is something you will never see again?
Not a comb or a brush but makes the hair feel plush. What is it?
A natural tattoo on babies
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.