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This Concept Map, created with IHMC CmapTools, has information related to: Vertebrates, Vertebrates have a Dorsal Nervous System, Vertebrates can be Birds, Vertebrates can be Reptiles, Vertebrates have a Complete Digestive System, Vertebrates have a Closed Circulatory System, Reptiles are Cold-blooded animals, Vertebrates have a Backbone, Vertebrates can be Mammals, Heat from Environment, Warm-blooded animals maintain Constant Body Temperature, Fish are Cold-blooded animals, Birds are Warm-blooded animals, Amphibians are Cold-blooded animals, Cold-blooded animals obtain Heat, Heat from Food, Vertebrates have a Cephalization, Vertebrates can be Fish, Vertebrates can be Amphibians, Mammals are Warm-blooded animals, Cold-blooded animals maintain Ambient Body Temperature