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For upcoming scince test


Invertebrates with soft, unsegmented bodies that are often protected by a hard outer shell

Open circulatory system

The blood is not always inside the blood vessels


Organs that remove oxygen from the water


The largest group of mollusks


Animals that eat only plants


Animals that only eat other animals


A flexible ribbon of tiny teeth, to obtain food


Mollusks that have two shells held together by hinges and strong muscles


Animals that eat both plants and animals


An ocean-dwelling mollusk whose foot is adapted to form tentacles around its mouth

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