If the 2015 patterns of oil demand and production continue, the United States will likely have to increase its importation of oil from
A) OPEC and the Middle East.
B) China.
C) Russia.
D) the Western Hemisphere.
A
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Questions 5 and 6 involve upper-level or geostrophic winds, which occur higher than 500 m (1600 ft). Because of the absence of friction, winds here flow parallel to the isobars, rather than at a 45-degree angle like surface winds. Draw the pressure-gradient force in red, Coriolis force in green, and the resulting flow of wind in blue, from the two high-pressure cells toward the low-pressure cell in the center of Figure 11.5a below.
What will be an ideal response?
Factors involved in soil formation include ________
A) nitrogen-fixing bacteria and grazing by herbivores B) weathering of parent material and the addition of organic material C) erosion, level terrain, and the absence of rooted vegetation D) tropical climate, acid precipitation, and frequent wildfires E) seasonal changes in the tides
The largest problem with adopting the new technology of renewable resources is ________
A) in evaluating the scientific and economic impacts B) that long?term maintenance costs are much higher than those for fossil fuels C) that energy production facilities are not located near consumers D) that technological advances have not been made in the last 30 years to meet our energy needs E) that the startup costs may be high
How long does it take for the Earth to make one rotation on its axis?
A. 24 hours B. 365 days C. 60 seconds D. 1 hour E. 30 days