1) Mammals have... a) fur or hair b) scales. c) feathers. 2) Mammals have... a) beak b) teeth c) wings 3) Mammals have ... limbs. a) 4 b) 2 c) 0 4) Mammals are... a) oviparous. b) viviparous. 5) Mammals are ... a) vertebrates. b) invertebrates. 6) Dolphins are... a) mammals b) fish 7) Bats are... a) birds b) mammals

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