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Home Q & A Board Science-Related Homework Help Physics
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einsteindude einsteindude
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9 years ago
Earth's magnetic field
A) never appreciably changes.
B) has reversed itself many times.
C) is centered at Earth's core.
D) both B and C
Textbook 
Conceptual Physical Science

Conceptual Physical Science


Edition: 6th
Authors:
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bSharpbSharp
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