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                                    6.Explainhowantimalsin Vertebrata are classibed inin uertiesubgroups. | 
                            
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Answer»  Thefivemost well knownclasses of vertebrates(animals with backbones) are mammals, birds, fish, reptiles, amphibians. They are all part of the phylum chordata -- I remember "chordata" by thinking of spinal chord. There are also a lot of animals without backbones.  | 
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