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Author Question: Lung cancer is the most common form of cancer in the United States. Indicate whether the ... (Read 35 times)

skymedlock

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Lung cancer is the most common form of cancer in the United States.
 
  Indicate whether the statement is true or false

Question 2

Vitamin A plays an essential role in the human body in
 
  A) acting as an antioxidant and scavenging free radicals.
  B) preventing scurvy.
  C) maintaining healthy vision.
  D) protecting polyunsaturated fatty acids (PUFAs) from oxidation.



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frankwu0507

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Answer to Question 1

FALSE

Answer to Question 2

C





 

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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

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