Multiple Choice
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
Correct Answer:
Verified
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