Which of the following protects and cushions a developing fetus from shocks,keeps the temperature from varying much,and develops from an early layer of dividing cells ? A) placenta B) umbilical cord C)

Which of the following protects and cushions a developing fetus from shocks,keeps the temperature from varying much,and develops from an early layer of dividing cells ?

A) placenta

B) umbilical cord

C) amniotic sac

D) all of the above

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Which of the following protects and cushions a developing fetus from shocks,keeps the temperature from varying much,and develops from an early layer of dividing cells ? A) place…

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