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Author Question: Ambient air contains what percentage of oxygen? A) 100 percent B) 50 percent C) 21 percent D) 10 ... (Read 81 times)

tnt_battle

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Ambient air contains what percentage of oxygen?
 
  A) 100 percent B) 50 percent C) 21 percent D) 10 percent

Question 2

How many deaths occur in the elderly each year due to a pulmonary embolism?
 
  A) 1,000,000
  B) 500,000
  C) 250,000
  D) 100,000



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mk6555

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Answer to Question 1

C

Answer to Question 2

D




tnt_battle

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Reply 2 on: Jul 3, 2018
Excellent


smrtceo

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Reply 3 on: Yesterday
Gracias!

 

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