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Author Question: Discuss several issues glacial and periglacial environments may face during the 21st Century. ... (Read 128 times)

penza

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on: Jul 14, 2018
Discuss several issues glacial and periglacial environments may face during the 21st Century.
 
  What will be an ideal response?

Question 2

Of the elements in the Earth's crusts, ________ makes up the most of the Earth's crust by weight.
 
  A) silicon (Si)
  B) aluminum (Al)
  C) oxygen (O)
  D) iron (Fe)


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Brenm

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

Answers will vary. The main broad issue facing both glacial and periglacial environments is global climate change. Many affects of these changes are already present, such as melting sea ice; reduced surface ice; melting permafrost; break-up of ice sheets, etc. These will continue to be an issue throughout the 21st Century.

Answer to Question 2

C


penza

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Reply 2 on: Jul 14, 2018
Gracias!

raenoj

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Reply 3 on: Yesterday
Excellent

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