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Which group of character of a whale justifies its inclusion in the class mammalia?

A. Lungs, 4 chambered heart, kidneys
B. Lungs, 4 chambered heart vertebral column
C. Hairs, mammary glands, viviparity
D. Gills, fins, viviparity

Right Answer: C. Hairs, mammary glands, viviparity

January 8, 2018   Asghar Khan    Zoology  
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