12 m2
… contact surface between the “to become viable enough, to be born” and the “birth-giver” a.k.a the mother.
https://aeon.co/videos/in-the-tug-of-war-between-mother-and-baby-the-placenta-is-a-life-giving-referee
… contact surface between the “to become viable enough, to be born” and the “birth-giver” a.k.a the mother.
https://aeon.co/videos/in-the-tug-of-war-between-mother-and-baby-the-placenta-is-a-life-giving-referee