What is a vertebrate?, An animal with a backbone, What is the main differences between vertebrates and invertebrates?, Vertebrates have a backbone, but invertebrates do not., Why do you think having a backbone is an advantage for vertebrates?, Having a backbone helps vertebrates move more easily and gives them strength., How do mammals take care of their young?, Mammals usually take care of their young by feeding them milk, I am a vertebrate, I lay eggs and I breathe with my gills. What am I?, Amphibians, The only mammals that lays egg is called , Platypus.

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