GrimartiAnDeduckm GrimartiAnDeduckm
  • 07-03-2017
  • Health
contestada

The heart, lungs, and brain begin to form during the _____ period of prenatal development.

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milkandcookie
milkandcookie milkandcookie
  • 07-03-2017
They begin to form in the 5th week of pregnancy so I would say the "Embryonic Period"
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