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Mollusks breathe in water primarily through gills, which are specialized organs located in their mantle cavity. These gills extract oxygen from the water as it flows over them, allowing for gas exchange. In some species, water is drawn in and expelled through siphons, enhancing efficiency in respiration. Additionally, some terrestrial mollusks have adapted to breathe air using a modified lung-like structure instead of gills.

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1mo ago

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