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In most mammals the placenta is essential to the embryo for the process of
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In most mammals the placenta is essential to the embryo for the process of

User Abdulsamet Kurt
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nutrition, excretion, and reproduction
User Muntasim
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Nutrition, Excretion, and Reproduction. 
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User Ikerfah
asked Nov 19, 2021 184k views
In most mammals, the embryo obtains food substances from the mother via the O Yolk O Amnion O Placenta Uterus​
Ikerfah asked Nov 19, 2021
by Ikerfah
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