What are the two tectonic models postulated for greenstone belt evolution?
a. back-arc marginal basin and continent/continent collision
b. continent/continent collision and intracontinental rift
c. intracontinental rift and back-arc marginal basin
d. subduction and mid-ocean ridge
e. subduction and continent/continent collision
c
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What is the key mechanism maintaining genetic variation in most populations?
A) asexual reproduction B) biotechnology C) inbreeding D) mutation E) sexual reproduction
Which of these is a non-economic measurement of economic development?
A. public services B. education C. health D. all of these E. none of these
During the most recent Ice Age, glaciers excavated deep valleys of Norway's Kjöllen Range as they cut their way to the sea. These valleys are known as:
A. estuaries B. fjords C. loess D. the Black Triangle
Atmospheric warming will increase water pollution in areas with increased rainfall and areas with prolonged drought
Indicate whether the statement is true or false