Mollusks (snails, mussels, oysters, octopuses, and their relatives)
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Presents the characteristics and behavior of animals in the five classes of mollusks. Shows the characteristics common to all mollusks and identifies representatives of the five classes--Amphineura, Scaphopoda, Pelecypoda, Gastropoda, and Cephalopoda. Indicates the economic importance of oysters and shells of the bivalves and describes the characteristics and behavior of the squid and octopus.
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