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Author Question: The greatest source of outdoor air pollution is emissions from the burning of fossil fuels. ... (Read 81 times)

debasdf

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on: Jul 11, 2018
The greatest source of outdoor air pollution is emissions from the burning of fossil fuels.
  Indicate whether the statement is true or false

Question 2

Many studies have found that there are health risks associated with the use of cell phones.
  Indicate whether the statement is true or false


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yuyiding

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Reply #1 on: Jul 11, 2018
Answer to Question 1

T

Answer to Question 2

F


debasdf

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Reply 2 on: Jul 11, 2018
Excellent

juliaf

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Reply 3 on: Yesterday
Gracias!

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