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1. What parts does the sea cucumber have in common with the sea star and sea urchin and What parts are unique to the sea

1. What parts does the sea cucumber have in common with the sea star and sea urchin and What parts are unique to the sea cucumber?

2. The sea cucumber has an elaborate system of digestive organs and internal
musculature. How do you think each of these features benefits the sea cucumber?

3. Based on its anatomy, for which activity do you think the sea cucumber is most
adapted?

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