Which vertebrates breathe with gills?, Fish, Mammals, Are mammals warm-blooded or cold-blooded?, warm-blooded, cold-blooded, Which group can hop and live in water and on land?, Amphibians, Reptiles, Which group moves by slithers?, Reptiles, Birds, Which group has fins and lives in water?, Fish , Mammals, Do birds use lungs or gills to breathe?, Lungs, Gills, Which group has dry scales?, Reptiles, Amphibians, Which vertebrates are cold-blooded and swim?, Fish , Mammals, Which group usually flies?, Birds, Amphibians, Which animal drinks milk when it is a baby?, Mammals, Fish.

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