Polar stratospheric clouds play a role in ____
A) primary pollution
B) ozone destruction
C) photochemical smog
D) acid rain formation
B
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Why are the New Madrid exceptional in the history of major earthquakes?
A. They occurred as a series of earthquakes and aftershocks. B. They occurred far away from tectonic plate boundaries. C. They occurred along a transform boundary. D. The New Madrid earthquakes were the largest earthquakes in history, as measured by the Richter Scale.
The (P) is (P) waves stands for:
A) physical B) primary C) productive D) pulsing
The primary parameters of a climatological classification system are
A) temperature and moisture. B) temperature and cloud cover. C) cloud cover and winds. D) winds and temperature.
Minimum insolation occurs in the middle latitude zone of the Southern Hemisphere on:
a. March 21. b. June 21. c. September 22. d. December 21.