Answer:
I am the minerals vital for your good health.
No legs have I to dance, no lungs have I to breathe. No life have I to live or die, and yet I do all three. What am I?
I hide but my head is outside. What am I?
I am not alive but I can die. What am I?
I am a band that does not perform sing or act.
What an fill a room but takes up no space?