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In most mammals, the embryo obtains food substances from the mother via the

O Yolk
O Amnion
O Placenta
Uterus​

User Ikerfah
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2 Answers

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its through the placenta
User Leberknecht
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Step-by-step explanation:

it is through the placenta.

it also protects the embryo from harmful substances

User Simon Charette
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