ToyuhxocaCharyyg ToyuhxocaCharyyg
  • 26-02-2017
  • Biology
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Why doesn't the mothers blood mix with that of the baby in the womb?

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StudyingWizz
StudyingWizz StudyingWizz
  • 26-02-2017
because the blood pressure of the mother is to high for the circulatory system of the little baby
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