Answer:
I have a neck and no head, two arms but no hands. I'm with you to school, I'm with you to work. What am I?
Before I grow I'm small. When I'm old I grow tall. When I die I give a mighty fall.
I am heavy forward, but backward I'm not. What am I?
I am the minerals vital for your good health.
I have three heads. Cut off one I become stronger. Cut off two I become ten.
It's what light turns into in the night