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Author Question: Clean air is composed mostly of a. oxygen b. nitrogen c. ozone d. argon e. ... (Read 82 times)

lidoalex

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on: Jul 26, 2018
Clean air is composed mostly of
 
  a. oxygen
  b. nitrogen
  c. ozone
  d. argon
  e. CO2

Question 2

The most desirable solution to the hazardous waste problem involves
 
  a. deep well injection
  b. incineration
  c. secure landfilling
  d. source reduction and recycling
  e. biological treatment


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Sweetkitty24130

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Reply #1 on: Jul 26, 2018
Answer to Question 1

b

Answer to Question 2

d


lidoalex

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Reply 2 on: Jul 26, 2018
Thanks for the timely response, appreciate it

helenmarkerine

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Reply 3 on: Yesterday
Excellent

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