1) Their body is covered with... a) hair or fur. b) scales. c) feathers. 2) Mammals breathe with their ... a) skin b) gills. c) lungs 3) When mammals are babies they drink... a) water. b) milk from their mothers. c) juice. 4) Most mammals have ... limbs. a) 4 b) 2 c) 0 5) Mammals are... a) oviparous. b) viviparous. 6) Mammals are ... a) vertebrates. b) invertebrates.

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