The primary source of energy used in China is
A) hydropower
B) oil
C) nuclear
D) coal
E) natural gas
D) coal
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Which of the following statements explains why low clouds slow surface cooling at night better than clear skies do?
A. Clouds start convection currents among them. B. Water droplets in the clouds reflect infrared energy back to the Earth. C. Clouds absorb and radiate infrared energy back to the Earth. D. Clouds conduct heat better than clear night air does.
The diurnal range of temperature is greatest ____ the ground
A) 100 feet above B) 2 feet above C) 100 cm below D) 500 feet above
Mount Shasta and Mount Lassen in the far northeastern part of California, were formed by what process?
A) The transformative motion of the North American plate against the Pacific plate. B) The divergence of the North American plate and the Juan de Fuca plate. C) The subduction of the Juan de Fuca plate beneath the North American plate. D) The convergence of the North American Plate against the Pacific plate.
Cinder cones ________
A) are usually less than 300 meters (1000 feet) high B) consist largely of pyroclastics C) have very steep slopes D) all of these