1) Mammals have a backbone. They are... a) vertebrates b) invertebrates 2) Mammals are born from their mother's womb. They are.. a) oviparous b) viviparous 3) Mammals' babies drink... a) water b) milk c) coffee 4) Most mammals have the body covered by... a) feathers b) scales c) fur or hair 5) Most mammals have ... a) 4 legs b) 2 legs c) no legs

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