Answer:
If I drink, I die. If I eat, I am fine. What am I?
I am heavy forward, but backward I'm not. What am I?
I help engines spin and pants stay up
I come out of the earth, I am sold in the market. The one who buys me cuts my tail, takes off my suit of silk, and weeps beside me when I am dead. What am I?
I go in hard come out soft. Blow me hard and I’ll make a pop.
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.