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gastropod |
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gastropodAny member of a very large group of molluscs (soft-bodied invertebrate animals). Gastropods have a single shell (in a spiral or modified spiral form) and eyes on stalks, and they move on a flattened, muscular foot. They have well-developed heads and rough, scraping tongues called radulae. Some are marine, some freshwater, and others land creatures, but they all tend to live in damp places. (Class Gastropoda.)
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There's enough for parents to groove on as well -- Aardman's character-based comedy, for one, as well as occasional appearances by a band of singing slugs (actual gastropods, like SpongeBob's pet snail, Gary) who manage to take songs we thought we never wanted to hear again (``Don't Worry, Be Happy,'' for starters) and turn them into sly fun. Part one is filled with information about the soil-food web from bacteria, fungi, algae, and protozoa to earthworms, gastropods, and mammals; part two describes in detail how to apply the soil-food web effectively in one's gardening, with the note that no one ever had to fertilize an old-growth forest. At very low concentrations, TBT can disrupt the endocrine system, as evidenced by the induction of male sexual characteristics in female gastropods (Oberdorster and McClellan-Green 2002; Smith 1981). |
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