What is a key source of ions found in ocean water?
A) The ions are produced in the process of evaporation of ocean water.
B) The ions originate from marine organisms that have decomposed on the bottom of the ocean.
C) The ions originate from salts contained in rainwater.
D) The ions originate from the weathering of rocks on land.
D
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A cinder cone is formed from relatively ________ viscosity magma with a ________ gas content
A) high; high B) high; low C) low; high D) low; low
Tertiary treatment of sewage produces water that is typically used for
A. Agriculture B. Drinking C. Watering livestock D. Industrial activities E. Dumping into freshwater systems
The city of Butte, Montana has been designated a U.S. National Historic Landmark because of the area's historic connection with what industry?
A) Logging B) Ranching C) Farming D) Mining
On large-scale maps, equivalence and conformity can be ________
A) simultaneously present B) simultaneously approximated for small areas C) disregarded if the map is of high latitudes D) considered to be the same map property