After about nine ❌, all the organs have formed and the embryo develops into a ❌. The foetus floats in a sac of ❌ fluid which protects it from knocks and bumps. The foetus receives oxygen and ❌ from the mother’s ❌. Waste matter and carbon ❌ are transferred from the foetus to the mother via the placenta. The baby is connected to the placenta by the ❌ cord.
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