Which is the most widely used energy source in poor, less-developed countries?
A. solid biomass
B. liquid biomass
C. wind
D. geothermal
Answer: A
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Which of the following best matches the description?Mining in which the material is removed without disturbing the top layer of soil.
A. reserves B. passive solar system C. nonrenewable energy sources D. acid mine drainage E. overburden F. photovoltaic cell G. renewable energy sources H. surface mining I. secondary recovery J. geothermal energy K. resources L. liquefied natural gas M. active solar system N. underground mining O. black lung disease
The anti-ulcer drug cimetidine blocks which of the following receptors?
A) only H1 B) only H2 C) both H1 and H2 D) neither H1 nor H2
The Sun and the Moon each exert a tidal force. These combine to form the highest tides ________.
A. at the winter apogee B. once a week C. during the winter solstice D. about twice a month (every 28 days) E. during the summer solstice
In the 1783 Treaty of Paris, the British agreed to give up land bounded by the Great Lakes, Ohio River, and the Mississippi River to America. This area became known at that time as what?
A) The Heartland B) The Western Woodland C) The Buckeye Region D) The Old Northwest