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matrenka [14]
3 years ago
14

Summarize the evidence indicating that over several hundreds of years or more there have been variations in the level of the sol

ar activity.
Physics
1 answer:
Slav-nsk [51]3 years ago
6 0

Answer:

Counts of sunspots infer the overall magnetic field changes, which correlate with the level of the magnitude of the solar dynamo and hence solar activity. Astronomers have reliable data going back to 1750.

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