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Author Question: The world's population is around A) 1 billion. B) 4 billion. C) 7 billion. D) 10 ... (Read 99 times)

Haya94

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on: Jul 12, 2018
The world's population is around
 
  A) 1 billion.
  B) 4 billion.
  C) 7 billion.
  D) 10 billion.

Question 2

Which gas forms during metal processing and is linked to numerous health problems?
 
  A) ozone
  B) nitrogen dioxide
  C) sulfur dioxide
  D) carbon monoxide


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pratush dev

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Reply #1 on: Jul 12, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: C


Haya94

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Reply 2 on: Jul 12, 2018
Gracias!

bigsis44

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Reply 3 on: Yesterday
Excellent

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