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:The extra oyster shell meal supplied to breeding hens?The main component of egg shell is?Minerals such as contained in oyster shell help animals to?Which of the following ingredients is required for…How many orbitals are in the d-sub shell?