Mineral Needed for Bone and Coral Building
This page is the CodyCross answer for the clue below from Night Life, Group 1745, Puzzle 2 (Aurora Borealis).
Question is: Mineral Needed for Bone and Coral Building
and the answer is: CALCIUM
Word Meaning:
CALCIUM — The chemical element with atomic number 20: a soft, silvery-white alkaline earth metal which occurs naturally as carbonate in limestone and as silicate in many rocks.
Definitions from Wiktionary.