what are echinoderms?

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what are echinoderms?

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2007-12-13 07:07:03 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

1 answers

Merriam-Webster free on line:

: any of a phylum (Echinodermata) of radially symmetrical coelomate marine animals including the starfishes, sea urchins, and related forms.

Like all organisms, they consume food, so they're exothermic.

2007-12-13 07:32:34 · answer #1 · answered by Facts Matter 7 · 0⤊ 0⤋