Discuss several issues glacial and periglacial environments may ...

[penza]

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)

[Brenm]

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]

Gracias!

[yeungji]

Thanks for the timely response, appreciate it