Author Question: The single most important cause of improvement in child survival in the twentieth century is ______. ... (Read 63 times)

mynx

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The single most important cause of improvement in child survival in the twentieth century is ______.
 
  Fill in the blank with correct word

Question 2

Worldwide, at least ______ children were born between 1950 and 2010.
 
  Fill in the blank with correct word



dlook33

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Answer to Question 1

immunization

Answer to Question 2

10 billion



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