On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet. ... As Mars doesn't have flowing liquid metal in its core, it doesn't produce the same dynamo effect.
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Explanation:
On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet. ... As Mars doesn't have flowing liquid metal in its core, it doesn't produce the same dynamo effect.