Answer:
Magnetism is the force exerted by magnets when they attract or repel each other.
For Evidence of terrestrial magnetism
When a magnetic body is buried inside the earth in a North-South direction, it gets magnetized due to the effect of terrestrial magnetism. A freely suspended magnet faces a North-South direction
Step-by-step explanation:
The reason why magnetism acts this way is caused by the motion of electric charges. Every substance is made of tiny units called atoms. Each atom contains electrons, particles that carry electric charges.
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