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 used for shipping and circumnavigation since the 1800s.
C) They have been blocked since 2007 by increasing ice.
D) They are expected to remain open until 2015.

Question

Quizplus · Accepted Answer

Until recently, sea ice has blocked the routes, making them unavailable for shipping. However, due to climate change and melting sea ice, these passages are becoming increasingly accessible for shipping.

Which of the Following Is Correct Regarding the Northwest and Northeast