Two function and features phylum_ cnidaria
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Its main function is to support the nerve cord. In Vertebrate ... The first two phyla have very few species in between them
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Explanation:
- All cnidarians have two membrane layers, with a jelly-like mesoglea between them.
- they form coral reef ( in particular corals, that are the builders of some of the richest and most complex ecosystems on the planet, coral reefs. Other cnidarians are important as predators in the open ocean)
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