Calcium and phosphorus are both essential for the proper growth of

a.

bones

b.

hair

c.

fingernails

d. all of the above

The correct answer is A. Calcium and phosphorus are both essential for the proper growth of bones. Both are dependent to each other to maximize its benefits in the bones. Bones are mostly made from phosphate about more than half of it. 

1. aspect is nothing really because the answer is right in front of your face

The best way to tell its true color is to look at the minerals streak