📊 Geography
Q. Which phenomenon causes Earth's magnetic field?
  • (A) Mantle convection
  • (B) Outer core motion
  • (C) Plate tectonics
  • (D) Atmospheric winds
✅ Correct Answer: (B) Outer core motion

Explanation: Movements of molten iron in the Earth's outer core generate the magnetic field.

Explanation by: Mr. Dubey
Movements of molten iron in the Earth's outer core generate the magnetic field.

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