These pillars are remnants of layers, most of which have been stripped away by wind erosion. If this occurred in less than five years you might reasonably conclude that
A. this area recently has become a productive place to produce agriculture.
B. this area was originally a lake.
C. there must have been drought, overgrazing, or some short-term climatic change.
D. the pillars are remnants of volcanic necks.
Answer: C
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All of the following are problems that remain to be solved in the United States with respect to air pollution except
a. Dramatically reducing emissions from older power and industrial plants b. The current laws do not deal seriously with indoor air pollution. c. Enforcement of the Clean Air Act is too stringent. d. Airports are exempt from many air pollution regulations. e. Two-cycle engines need to be regulated more effectively.
Extratropical cyclones over warm waters can increase in strength
Indicate whether the statement is true or false
The part of the world that has been warming fastest in the last 50 years is ____.
A. the mid-latitudes B. the Arctic region C. North America D. the Tibetan Plateau E. the oceans throughout the world
Compare the countries of Bolivia and Ecuador in terms of future economic growth
What will be an ideal response?