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Author Question: Where in the United States is the risk of radon exposure lowest? A) North Dakota B) Alabama C) ... (Read 94 times)

Tirant22

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Where in the United States is the risk of radon exposure lowest?
 
  A) North Dakota
  B) Alabama
  C) New Mexico
  D) Florida
  E) Michigan

Question 2

The first function of water vapor in the earth's original atmosphere was to:
 
  A) create oxygen.
  B) increase the amount of carbon dioxide in the atmosphere.
  C) block the solar wind.
  D) fall as rain and thus fill the oceans.
  E) provide needed nourishment for primitive plants.


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ky860224

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