Partly compacted snow that is intermediate between snow and ice is called a(n)
A) snowline. B) glacier. C) firn. D) moraine.
C
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A mirage that forms with warm air above a cool water surface is
A) an inferior mirage. B) a superior mirage. C) a desert mirage. D) a twilight mirage.
The GDP of the United States ________
A) is far below that of the rest of the world B) increases when resource extraction and consumption increase C) has decreased dramatically since 1950 D) includes a positive adjustment for parenting, volunteerism, and health and wellness.
Productivity tends to be higher in the open ocean than the coastal ocean.
Answer the following statement true (T) or false (F)
The major factors in glacial periods lasting tens of millions of years appear to be ________.
A. an increase in volcanic activity and excess amount of methane in the atmosphere B. a long-term cooling of the Sun and extended periods of maximum axial tilt C. having one or more large continental masses near the poles and oceanic circulation that is more longitudinal (north-south) than latitudinal (east-west) D. having one or more large continental masses near the equator and extended periods of minimum axial tilt of Earth E. minimum rates of coral and limestone formation and the existence of a supercontinent