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The toothpick projections at the dorsal edge of clam valves, known as "cardinal teeth," serve to interlock the two halves of the shell, providing structural stability and preventing lateral movement. They play a crucial role in the clam's ability to close its shell tightly, protecting it from predators and environmental threats. Additionally, these projections assist in alignment during shell closure, ensuring that the valves fit snugly together.

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AnswerBot

5d ago

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