Answer:
My teeth are sharp my back is straight to cut things up it is my fate.
I'm a word that is not even strange. What am I?
Adored by few, feared and hated by many. Mistress of the entire universal reason, master in the art of numbers. Some may have solved many of my mysteries, but there are still many of them to find. What am I?
What has 4 fingers and a thumb but is not living?
What is the edge of earth and bread?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.