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symbo symbo
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Posts: 1970
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7 years ago
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
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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discovererdiscoverer
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7 years ago
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symbo Author
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7 years ago
This helped my grade so much Perfect
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Thanks
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2 hours ago
Thanks for your help!!
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