Question

Calcium and phosphorus are both essential for the proper growth of _______.



a.

bones


b.

hair


c.

fingernails


d.

all of the above

Answer 1

what do u think?

Answer 2

D

Answer 3

Hair is a protein filament (Keratinized)

Answer 4

Im pretty sure about Bones tho

Answer 5

so its A

Answer 6

\(\huge\checkmark\)

Answer 7

check out page 62
http://books.google.ae/books?id=DNwJAAAAIAAJ&pg=PA62&lpg=PA62&dq=Calcium+and+phosphorus+are+both+essential+for+the+proper+growth+of&source=bl&ots=W4muw-pX1M&sig=A6GbQKD7eWDPDXWunxVBERZt4pM&hl=en&sa=X&ei=lpPHU5KCO8Sq0QXbwoBw&ved=0CEUQ6AEwBQ#v=onepage&q=Calcium%20and%20phosphorus%20are%20both%20essential%20for%20the%20proper%20growth%20of&f=false
a new paragraph
starts with Calcium/Phosphorus

Answer 8

to get a better idea :)