Answer:
What has a neck but no head?
Taken from a mine and then locked up in a wooden case. I am used by students everyday.
I am useless when together but useful when I am broken apart. What am I?
I tremble at each breath of air, and yet can heaviest burdens bear. What am I?
I can be hairy and itchy all over. I hang on a stick. I can be the scariest thing you have ever seen. I stand in the middle of nowhere.
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.