Answer:A calcareous, spiny endoskeleton of plates or ossicles
A water-vascular system
Pedicellariae
Dermal branchiae
Basic penta-radial symmetry
Explanation:
Answer:
★ Cnidarians have groups of similar cells that work together as tissues, while sponges have no tissues, only disconnected regions of specialized cells.
Explanation:
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Answer:
our parents used to be like us and harm the environment but now after generation of harming the environment the environment is dying and if it dies we die to.
Explanation:
facts.
