Answer:
People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?
If you lose me you may cause people around you to lose me too.
I am higher than the king. What am I ?
It's been around for millions of years but is never more than a month old. What is it?
I help boats park
What did the piece of wood say when he saw the screwdriver and screws approaching?