Because deep-ocean circulation is driven largely by variations in water temperature and salinity, it is also called ________ circulation.
A) thermohaline
B) anaerobic
C) hydrothermal
D) hypoxic
Answer: A) thermohaline
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Which of the following best matches the description?Energy sources that can be replaced by natural processes.
A. liquefied natural gas B. active solar system C. resources D. photovoltaic cell E. geothermal energy F. nonrenewable energy sources G. acid mine drainage H. black lung disease I. underground mining J. overburden K. reserves L. surface mining M. passive solar system N. secondary recovery O. renewable energy sources
A world globe, or a three-dimensional replica of a region's terrain, is an example of a(n) _______________ model
Fill in the blank(s) with correct word
What is a dryline and where do they tend to occur most often in the United States?
The GPI for the United States ________
A) has remained unchanged since 1975 B) increases when resource consumption increases C) increases when resources extraction increases D) is far below that of the rest of the world E) has increased dramatically since 1950