Subject: Mammalian birth
Date: Mon Feb 16 12:53:25 1998
Posted by Matthew Barchok
Grade level: 10-12
School: Madison High School
City: Madison State/Province: Ohio
Country: U.S.A.
Area of science: Development
ID: 887655205.Dv
Message:
When a mammal is born, what signals the baby to cut off the blood
supply to the umbilical cord and begin breathing on its own?
Re: Mammalian birth
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