Answer:
I am so delicate that even mentioning me breaks me. What am I?
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?
I welcome the day with a show of light. I steathily came here in the night. I bathe the earthy stuff at dawn but by noon, I'm gone. What am I?
I am the kind of nut that is empty at the center and has no shell.
You heard me before and then again. Afterward I die, until you call me again. What am I?
No matter how little or how much you use me, you change me every month.