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Fochaian Fochaian
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8 years ago
Although we don't know for sure, changes in the strength and orientation of earth's magnetic field are most likely due to
A) changes in the velocity of subducting plates.
B) variations in sea-floor spreading rates.
C) the total number of mantle hot spots.
D) fluctuations in outer-core convection.
Textbook 
How Does Earth Work? Physical Geology and the Process of Science

How Does Earth Work? Physical Geology and the Process of Science


Edition: 2nd
Authors:
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GurshGursh
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7 years ago
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Fochaian Author
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#2
7 years ago
I confirmed your response with a friend of mine, you're smart
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#3
7 years ago
Glad my interpretation was correct, will be around if you need anything else
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