The major mineral present in the shell of Molluscs is? by Sunday | Mar 15 | Biology WAEC | 0 comments A. Copper B. Sodium C. Iron D. Calcium Correct Answer: Option D – Calcium Users Also Read These:Which of the following elements has a ground state…How many orbitals are in the d-sub shell?Minerals such as contained in oyster shell help animals to?The maximum number of electrons that can occupy the…The main component of egg shell is?