Bibliography is essential in determining its content. I hope this helped
Answer:
i believe your answer would be Mollusca.
Explanation:
(i looked it up on britannica if you have any questions.) Mollusk, also spelled mollusc, any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body.
The main form is carbon dioxide and methane
Answer: I believe it is A. DNA polymerase checking the DNA
Oceania, South America, and Southeast Asia.