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Author Question: Watersheds are surrounded by A) fluvial units. B) continental divides. C) hydrologic unit codes ... (Read 42 times)

karen

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Watersheds are surrounded by
 
  A) fluvial units.
  B) continental divides.
  C) hydrologic unit codes (HUCs).
  D) stream orders.
  E) drainage divides.

Question 2

According to readings from the Mauna Loa Observatory, CO2 concentrations in May 2013 exceeded ________ for the first time during the last 800,000 years.
 
  A) 100-ppm B) 200-ppm C) 300-ppm D) 400-ppm E) 500-ppm



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joshbk44

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Answer to Question 1

E

Answer to Question 2

D




karen

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Reply 2 on: Jul 14, 2018
Gracias!


Zebsrer

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Reply 3 on: Yesterday
Wow, this really help

 

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