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Author Question: Ppm and ppb are A) toxic chemicals. B) chlorinated hydrocarbons. C) wastewater treatment ... (Read 88 times)

dmcintosh

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on: Aug 27, 2018
Ppm and ppb are
 
  A) toxic chemicals.
  B) chlorinated hydrocarbons.
  C) wastewater treatment strategies.
  D) concentration units.

Question 2

One of the first applications of polyethylene was
 
  A) billiard balls.
  B) garbage bags.
  C) electrical insulation.
  D) parachutes.


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Jevvish

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Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

C


dmcintosh

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Reply 2 on: Aug 27, 2018
Thanks for the timely response, appreciate it

frankwu0507

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Reply 3 on: Yesterday
Excellent

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