<span>The pearl producing species is called mollusks. It is considered to be the earliest form of animal life and the second largest phylum in the animal kingdom. The ones responsible for the production of pearls is the conchiferra, a type of subphyla. </span>
Answer: Really hope this helps you.
Explanation: it depends in what you are using it for if you are using it for math then it means a relation from a set of inputs to a set of possible outputs where the input and the output is related exactly.
