0 ч 1 мин, 23 янв 2002 г. - babies urine
Описание:
the baby will start to develop its urine and it will release it into the amniotic sac and making amniotic fluid. in which later the baby will swallow which will go back into the amniotic sac so its like a cycle basically.
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Christopher growth and development of a fetus
biology
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