9.Why do whales belong to the mammalian gruop?
A.Whales have moist skin for breathing.
B.Whales have lungs and mammary glands.
C.Whales have feathers and wings for flying.
D.Whales have gills and fins for swimming.
10.Snakes,turtles and lizard belong to reptiles because they have dry scales and they lay eggs from which their offspring are hatched.Dose a dog belong to this group?
A.Yes,Dogs belong to this group?
B.No,because it has hair or fur all over his body.
C.Yes,because it has dry scales,it laid eggs and crawl.
D.Yes,because it breathe through their lungs lungs and crawl.​