Question

Economic and medical importance of phylum echinodermata

Answer 1

Echinoderms play numerous ecological roles. Sand dollars and sea cucumbers burrow into the sand, providing more oxygen at greater depths of the sea floor. ... And many sea cucumbers provide a habitat for parasites such as crabs, worms, and snails.Echinoderms are also animportant step in the ocean food chain

Answer 2

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