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slashbro slashbro
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Posts: 743
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6 years ago
During the embryonic stage of prenatal development, the:
 
  A) zygote gets implanted in the uterine wall.
  B) fetus opens and shuts its eyes.
  C) fingers and toes are formed.
  D) sex organs start to differentiate.
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wrote...
6 years ago
D
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