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Author Question: The Ferghana Valley is divided between Tajikistan, Uzbekistan, and: A) Afghanistan B) Kazakhstan ... (Read 61 times)

humphriesbr@me.com

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on: Jul 14, 2018
The Ferghana Valley is divided between Tajikistan, Uzbekistan, and:
 
  A) Afghanistan
  B) Kazakhstan
  C) Kyrgyzstan
  D) China

Question 2

What factors might have caused atmospheric CO2 variations that kept pace with glacial climate fluctuations?
 
  What will be an ideal response?


elizabethrperez

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Reply #1 on: Jul 14, 2018
Answer to Question 1

C

Answer to Question 2

The magnitude of the biological pump, as controlled by nutrient availability (including Fe) could have led to a positive feedback look on glacial-interglacial timescales. Growth of coral reefs as sea-level rose and flooded the tropical continental shelves during deglaciation would have released CO2 to the atmosphere, furthering the warming and ice-sheet melting.


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