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Question

Revolt · Accepted Answer

Sunspots are dark areas on the surface of the Sun that are cooler than surrounding areas.; Sunspots appear in groups, vary in size, and cycle in number over an 11-year period.; Solar flares are sudden eruptions of energy from a small area of the Sun's surface.; Solar flares are extremely hot (10 to 20 million degrees Celsius) and extend into the coron; Solar flares occur near sunspots and can disturb radio communications on Earth.

The Sun

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