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How did scientists discover that earth's magnet poles have reversed multiple times​

Sagot :

Answer:

inaral nila yung geologic record?

Explanation:

We can see evidence of magnetic polarity reversals by examining the geologic record. When lavas or sediments solidify, they often preserve a signature of the ambient magnetic field at the time of deposition. Incredible as it may seem, the magnetic field occasionally flips over!