Saudi Arabia, Venezuela, Iran, Iraq, Kuwait, United Arab Emirates, and the Russian Federation control approximately what percentage of the world's proved reserves in petroleum?
A. 50%
B. 89%
C. 73%
D. 33%
Answer: C
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In the Chapter 2 Investigation (Evaluating Solar Energy), which of the following is the most important factor to consider?
A) Whether the site was in the Northern Hemisphere or Southern Hemisphere B) The latitude of the sites C) The longitude of the sites D) Which time zone a site is in
To rocket from Earth to the Moon requires a speed
A. at any sustained speed if time isn't a factor. B. at least that of escape speed from Earth. C. more than escape speed from Earth. D. none of the above
Atmospheric motions are mostly horizontal because
A) gravity restricts vertical motions B) the atmosphere is very heavy C) its shallowness doesn't allow large vertical motions D) the oceans restrict vertical air motions
This cloud sometimes produces "mare's tails"
cirrostratus cumulonibus altostratus cirrus