Answer:
It covers you, you lose it every day and you'd die without it.
A tower at the root of all confusion.
What can you lose that will cause other people to lose theirs too?
What is seen in the water and in the sky? It is part of the rainbow and can be in your eye
There is a man in a 4 story building. He jumps out of the window and is unharmed. He used no padding, and had no harm done. How?
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.