silverpurify silverpurify
  • 04-06-2014
  • Health
contestada

The fetus is nourished by the __________ during the first 7 weeks and by the _______ from week 8 through birth ?

Respuesta :

kayt91
kayt91 kayt91
  • 07-06-2014
yolk sac during first 7 weeks
placenta from 8 weeks till birth
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