What is the heat source for hydrothermal activity on land?
A)earthquake faults only
B)recent or current volcanic activity only
C)deep heat in Earth's interior only
D)earthquake faults and recent or current volcanic activity
E)recent or current volcanic activity and deep heat in Earth's interior
C
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Earth's magnetism is likely produced by
A. surrounding radiation belts above the atmosphere B. magnetite deposits in its deep interior. C. convection cells beneath its surface. D. none of the above
Describe the outer cell walls of diatoms and coccolithophores What will be an ideal response?
The factors necessary to make a really large wind wave are: a. disturbing forces and restoring forces
b. wind strength, wind duration, and fetch. c. wind strength, wind duration, and wind direction. d. disturbing forces and wind forces.
What type of political division (subject) within Russia has a degree of self-governance?
a. Commonwealth of Independent States b. Autonomies c. Crimeans d. Unions e. Localities