PPSC Solved Past Papers MCQs, Everyday Science MCQs, PMS GK 2020 Solved Paper MCQs_________ makes up 14 to 17 percent of skeleton. Posted on March 25, 2021 by Rana TahirA. Iron B. Sodium C. Magnesium D. PhosphorousShare this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)