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Author Question: Due primarily to human activities, the atmospheric concentration of methane has decreased over the ... (Read 25 times)

lracut11

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on: Jul 13, 2018
Due primarily to human activities, the atmospheric concentration of methane has decreased over the last decade or so.
  Indicate whether the statement is true or false

Question 2

Most of Earth's carbon dioxide is in the atmosphere.
  Indicate whether the statement is true or false


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sarajane1989

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Reply #1 on: Jul 13, 2018
Answer to Question 1

False

Answer to Question 2

False


lracut11

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Reply 2 on: Jul 13, 2018
Excellent

Dominic

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Reply 3 on: Yesterday
Gracias!

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