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Author Question: The first synthetic polymer was produced in 1909 and is known as A) polyethylene. B) celluloid. ... (Read 137 times)

khang

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The first synthetic polymer was produced in 1909 and is known as
 
  A) polyethylene.
  B) celluloid.
  C) bakelite.
  D) plexiglass.

Question 2

Which of the following uses the greatest amount of water in the United States?
 
  A) agricultural irrigation
  B) cooling for electric power plants
  C) industrial manufacturing
  D) public water supplies



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bigcheese9

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Answer to Question 1

C

Answer to Question 2

B





 

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