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staedtler staedtler
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7 years ago
Two conditions appear to be necessary for the generation of a powerful magnetic field in planets that are NOT present simultaneously on Mercury. These conditions are
A)   rapid rotation and a molten iron core.
B)   a molten core and a significant atmosphere.
C)   rapid rotation and a conducting atmosphere.
D)   a solid surface and a significant iron content.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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hyponoticahyponotica
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7 years ago
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staedtler Author
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7 years ago
Grinning Face Exactly what I needed
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