Answer:
What is the edge of earth and bread?
I am a million people’s wakeup call
I don't live within a house nor do I live without. Most will use me when they come in and again when they go out.
You do not want me when you don’t have me, but when you have me you don’t want to lose me. What am I?
Mary’s father has 5 daughters: Nana, Nene, Nini, Nono. What is the 5th daughter's name?
No matter how little or how much you use me, you change me every month.