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Home Q & A Board Science-Related Homework Help Psychology Developmental Psychology
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kak2z kak2z
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6 years ago
The ________ is an organ that allows oxygen, nutrients, and other substances to be transferred between the mother's and baby's blood.   
A)

amnion   
B)

placenta   
C)

yolk sac   
D)

umbilical cord
Textbook 
Lifespan Development, Canadian Edition

Lifespan Development, Canadian Edition


Edition: 6th
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ValconeyeValconeye
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6 years ago
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kak2z Author
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6 years ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
jmendoza
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Yesterday
Thanks for your help!!
decibul
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2 hours ago
This helped my grade so much Perfect
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