what is placenta where it is formed
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Between Weeks 0 and 13, the fertilized blastocyst embeds in the uterine wall, and development of the fetus and placenta begin. At this time, the placenta is a relatively low-oxygen environment. ... The placenta develops to bring oxygen and nutrients to the fetus and to move harmful waste and nutrients away.
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placenta is a temporary organs that connected the developing fetus via.
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