Answer:
I am the minerals vital for your good health.
I am a rock group with four members all of whom died in plane crashes. Who am I?
I am a candy that looks like a shepherdβs staff.
I am good at concealing what's real and hide what's true. Sometimes I bring out the courage in you!
I am taken from a mine and shut in a wooden case from which I am never released. Yet I am used by almost everybody. What am I?
What never gets any wetter no matter how hard it rains?