4. Body organs first begin to form and function during the period of the ; within 6...

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4. Body organs first begin to form and function during the period of the

; within 6 months, during the period of the , the organs are sufficiently functional to provide a good chance of surviving and thriving.

a. zygote; embryo

b. zygote; fetus

c. embryo; fetus

d. placenta; fetus

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Psychology

ISBN: 9781319132101

13th Edition

Authors: David G. Myers, C. Nathan DeWall

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