Answer:
How many people are dead in a standard grave yard?
Everybody's got one.
What calls for help, when written in capital letters, is the same forwards, backwards and upside down?
What is seen in the water and in the sky? It is part of the rainbow and can be in your eye
What is often returned, but never borrowed?
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.