Sunspots are planet-sized islands of magnetism on the surface of the sun. They are the source of solar flares, coronal mass ejections and intense UV radiation. Based on NASA data of recent sunspot activity, all BUT ONE of these events mostly likely occurred on Earth from 2000- 2001.
A) frequent power grid disturbances
B) ozone depletion in the upper atmosphere
C) an increase in the occurrence of auroras
D) increased radio and satellite communications systems disturbances
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Answer: the answer to your question is c.
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