Which igneous rocks are typically the lightest in color?
A) ultramafic
B) felsic
C) intermediate
D) mafic
Answer: B
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In the interior of continents the earth's crust is typically about 40 km thick and the elevation is near sea level. In the Himalayas the crust is more than 60km thick
Isostasy says crust thicker than this average should produce elevated terrain (mountains), so why isn't the elevation of the Himalayas 20km?
Unrest in Africa was illustrated by violence in ________ after the election of National Alliance of Rainbow Coalition in 2002
A) Uganda B) Somalia C) Kenya D) Tanzania
The Russian region has a long history of geopolitical concerns, including resources and trade routes from the Silk Road to the Suez Canal
Indicate whether the statement is true or false
Increasing levels of greenhouse gases plays a major role in the warming of the lower atmosphere
Indicate whether the statement is true or false