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symbo symbo
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8 years ago
Which of the following statements is NOT true for sunspots?
A)   They are cooler than the surrounding photosphere of the Sun.
B)   They increase and decrease in number relatively regularly.
C)   They often occur in pairs of opposite magnetic polarity.
D)   They occur in regions of lower-than-average magnetic fields.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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papachulopapachulo
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8 years ago
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Thank you, thank you, thank you!
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