The two main groups of animals - Vertebrates, Invertebrates, They do not have a skeleton inside their bodies. - Invertebrates, They have a skeleton inside their bodies. - Vertebrates, They have six legs and three body parts. - Insects, They have muscular bodies - Molluscs, They have many segments - Worms, They are cold-blooded animals. - Fish, Three kinds of feathers - Down feather, body feather, flight feather, They are born alive and suckle milk - Mammals, The groups of vertebrate animals. - Mammals, Birds, Fish,

Science 3 - Animals

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