Answer:
I am the beginning of the end and the end of time and space. I am essential to creation and I surround every place.
Many people own a copy of me. Without me the world would fall.
I am the kind of nut that is empty at the center and has no shell.
Marking mortal privation when firmly in place. An enduring summation inscribed in my face.
I am black, white, and read all over. What am I?
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic