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doit_the_clown doit_the_clown
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7 years ago
Sunspots are caused by
A)   the impact of meteoroids and comets on the solar surface.
B)   differential rotation and its effect on weak magnetic fields just under the solar surface.
C)   dark, absorbing clouds hanging over the surface, above the magnetic field regions.
D)   coronal holes, which darken the surface.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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discovererdiscoverer
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7 years ago
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I appreciate what you did here, answered it right Smiling Face with Open Mouth
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Just got PERFECT on my quiz
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This helped my grade so much Perfect
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