Sagot :
Answer:
Fish, reptiles, birds, amphibians and mammals are different sub-groups of vertebrates - they all have internal skeletons and backbones. The animals that belong to these sub-groups all share the observable features of that group.
Answer:
Fish, reptiles, birds, amphibians and mammals are different sub-groups of vertebrates - they all have internal skeletons and backbones. The animals that belong to these sub-groups all share the observable features of that group.