Answer:
I am the minerals vital for your good health.
Flat as a leaf, round as a ring; have two eyes, can't see a thing. What am I?
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
score in end zones.
Everyone has me and no one can lose me. What am I?
What never gets any wetter no matter how hard it rains?