Answer:
I am made by nature soft as silk; A puffy cloud white as milk; Snow tops this tropical crop; The dirtiest part of a mop.
I am owned by the poor the rich does not need me. If you eat me you will die!
What is the edge of earth and bread?
I'm blue at day and black at night. I do contain some creatures born and died. What am I?
Santa shakes his belly like a bowl full of me
No matter how little or how much you use me, you change me every month.