Wind blows due to:
a. vertical differences in atmospheric moisture
b. horizontal differences in atmospheric pressure.
c. horizontal differences in atmospheric moisture.
d. vertical differences in atmospheric pressure.
b
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The global trend in sulfur emissions can be characterized by
A) increasing rates of emission in almost every country. B) decreasing rates of emission in almost every country. C) decreasing rates of emission in the industrialized countries but increasing rates in the developing countries. D) increasing rates of emission in the industrialized countries but decreasing rates in the developing countries.
The region drained by a single river or river system is the ________
Fill in the blank(s) with correct word
Which of the following is a common setting for a spring?
A) A limestone aquifer that intersects the surface B) A permeable upper layer with a water table deep below the surface C) A nonpermeable upper layer with a water table deep below the surface D) An unconfined aquifer with a water table deep below the surface
The second greatest wind speed ever recorded at the Earth's surface occurred at which of the following locations?
A. Cheyenne, Wyoming B. Miami, Florida C. Mt. Washington, New Hampshire D. Mt. Pleasant, Iowa