What is our best evidence that earth has a magnetic field?
A
All things fall towards earth's centre.
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B
A compass needle lines up with it.
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C
Winds blow from east to west.
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D
Earth's oceans all have currents.
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Solution
The correct option is B A compass needle lines up with it. The best evidence is to test it by taking a direction compass and seeing it where the north position will point and you will see that it will always point to the north and south pole.