Answer: B. combined with another molecule
Explanation:
i just took the test
<span>Bivalvia - Clams, Oysters, Scallops and Mussels.
Cephalopod - Octopi, Squids, Cuttlefish, and the Chambered Nautilus.
Gastropoda - Snails and Slugs.
<span> Polyplacophora - Chitons.</span></span>
Answer:It is called The Foramen Magnum
Explanation: It is a large oval opening linking the Spinal cord and the Brain
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Answer:
c.
Explanation:
they all are correct but c is he best answer