PT 14 S3 Q6

   It is a fundamental tenet of geophysics that theEarth's magnetic ... ...

The author mentions each of the following as possible contributing causes to reversals of the Earth's magnetic field EXCEPT
(A) changes in the way heat circulates within the outer core fluid
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: Science & Technology Mix 1