Answers

2015-11-02T20:30:16+08:00
Invertebrates are animals that don't have backbone. Some Invertebrates live in water. Mollusks, Annelids, Insects, Echinoderm, Crustaceans, Cnidarian, and Arachnids are the classes of invertebrates
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2015-11-02T20:48:10+08:00
Invertebrates are animals without backbone.
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