Which of the following is CORRECT regarding the Northwest and Northeast Passages?
A) They have been blocked since 2007 by increasing ice.
B) They are expected to remain open until 2015.
C) Until recently, sea ice blocked the routes, making them unavailable for shipping.
D) They have been used for shipping and circumnavigation since the 1800s.
C
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In the Historical Roots of our Ecological Crisis, the historian Lynn White focuses on the influence of technology on our attitudes about nature. Which of the following technologies had the most significance in shaping these attitudes according to White?
a. Windmills b. The weight-driven clock c. The mold board plow d. The blast furnace
Distinct regions of broadly similar flora and fauna are called
A) biozones. B) ecospheres. C) biomes. D) biogeographic realms.
The water cycle includes water in the
A) atmosphere, biosphere, ground, surface, and ocean. B) hydrosphere. C) oceans and atmosphere only. D) both A and B
Oscillations in temperature and ice cover are known as __________________.