Answer:
One by one we fall from heaven down into the depths of past, And our world is ever upturned so that yet some time weβll last.
Take one out and scratch my head, I am now black but once was red.
I'm not man's best friend, I'm their enemy, I can mark your end, yet you do not see me, I am very small, but very tough, If you have me, then you have it rough.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
More precious than gold, but cannot be bought, Can never be sold, only earned if itβs sought, If it is broken it can still be mended, At birth it canβt start nor by death is it ended.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.