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It is actually only three common structures since not all mollusks have shells. Here it is:

Head- structure that contains the mouth, brain and sensory organs

Foot- muscular structure that extends from the body and is used for movement

Mantle- fleshy tissue that covers and protects the internal organs. It also secretes the shell for most mollusks

:) B) =3 -_-

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14y ago

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