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genderma genderma
wrote...
Posts: 4967
8 years ago
As many as _____ of all birth defects are related to environmental factors that threaten the fetus while it is still developing in the mother’s womb.
A) one-fourth
B) one-third
C) one-half
D) two-thirds
Textbook 
The World of Children

The World of Children


Edition: 3rd
Author:
Read 442 times
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Answer verified by a subject expert
yariyari
wrote...
Top Poster
Posts: 8207
8 years ago
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genderma Author
wrote...
8 years ago
This is wonderful, happy to have signed up Grinning Face
wrote...
8 years ago
Thanks for the update.
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