Which of the following is CORRECT regarding the Northwest and Northeast Passages?
A) Until recently,sea ice blocked the routes,making them unavailable for shipping.
B) They have been blocked since 2007 by increasing ice.
C) They have been used for shipping and circumnavigation since the 1800s.
D) They are expected to remain open until 2015.
Correct Answer:
Verified
Q11: Scattering caused by atmospheric particles larger than
Q12: A vertical air current that is generated
Q13: The sky (lower tropopause)appears blue in color
Q14: Which of the following is CORRECTLY matched?
A)Conduction
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