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Best Answer: Domain ... Population and domain are not technically taxonomic groups. The animal kingdom is the most inclusive taxonomic group. The second most ...
Gastropods are the most diverse family of mollusks, including over 60,000 species of snails and slugs that live in marine, freshwater, and terrestrial habitats. Cephalopods, the most advanced mollusks, include octopuses, squids, cuttlefish and nautiluses. Most of the members of this group either lack shells, or have small internal shells.