Answer:
The more you work, the more I'll eat.You keep me full, I'll keep you neat. What am I?
I go up when the rain comes down. What am I?
What comes in many different sizes but is always only 1 foot long?
A trail, a union, together tied. Come across me and you will find you cannot change the course I'm on. Without me you cannot travel on. What am I?
Alone I am 24th with a friend I am 20. Another friend and I am unclean.
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.