Respuesta :

7v7

Answer:

D. 250,000 years

Explanation:

It's really 200,000 to 300,000 years, but 250,000 years is right in the middle, so it must be 250,000 years.

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ineedhelpyay

Answer:

D) 250,000 yrs.

Explanation:

Earth's magnetic poles reverse approximately every 250,000 years.