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What is the average length of a complete cycle of sunspots and magnetic fields on the Sun?

symbo

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What is the average length of a complete cycle of sunspots and magnetic fields on the Sun?

What is the average length of a complete cycle of sunspots and magnetic fields on the Sun?
A) 22 years B) 7 years C) 4.5 years D) 11 years

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Discovering the Universe

Discovering the Universe

Edition: 7^th

Authors: Kaufmann, Comins

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symbo Author

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this is exactly what I needed

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einstein

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