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Author Question: The ectoderm becomes the __________. A) muscles and skeleton B) nervous system and skin C) ... (Read 109 times)

rlane42

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The ectoderm becomes the __________.
 
  A) muscles and skeleton
  B) nervous system and skin
  C) circulatory system and other internal organs
  D) digestive system, lungs, urinary tract, and glands

Question 2

The most rapid prenatal changes take place in the period of the __________.
 
  A) zygote
  B) blastocyst
  C) embryo
  D) fetus



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soda0602

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Answer to Question 1

Answer: B

Answer to Question 2

Answer: C





 

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