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OpenStudy (cenaida):
All echinoderms have spiny skin, penta-radial symmetry, an internal skeleton, a water vascular system, and _______. A. echino-feet B. a brain C. tube feet D. skin gills
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OpenStudy (zale101):
they have tube feet
OpenStudy (cenaida):
thanks zale!
OpenStudy (zale101):
np :)
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