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Biology 24 Online
OpenStudy (anonymous):

which best describes the relationship of the embryo and the fetus

OpenStudy (anonymous):

The baby is first a zygote for two weeks, and then it is a embryo for 6 weeks. In this time it is implanted in the lining of the uterus. This is a critical period because they're more vulnerable to toxins. The baby is then a fetus for the rest of the time, which is 7 months. This is where the organs are developing more.

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