Mantle
In mollusks with shells, the outer cells of the mantle secrete
calcium carbonate and conchiolin to form the shell. The mantle is the body wall
of a mollusk. It resides below the shell where it covers the body of the
animal.
I think computer , hope u got it right
Answer: A
Explanation:
because I used it during the quiz an I passed so, that is the correct answer.
Yes so he came up with the theory of continental drift
