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Which of these follows a cyclical pattern? A. sunspot maxima and minima B. condensation of a nebula C. formation of a crater D. formation of a black hole

Which of these follows a cyclical pattern? A. sunspot maxima and minima B. condensation of a nebula C. formation of a crater D. formation of a black hole
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Which of these follows a cyclical pattern?

A. sunspot maxima and minima
B. condensation of a nebula
C. formation of a crater
D. formation of a black hole

asked
User Dominic Price
by
8.1k points

1 Answer

4 votes
The number of sunspots, observed during the past 300 years or so,
has been found to vary up and down in a cycle of very very roughly
about 11 years.
answered
User Alexandre Lavoie
by
8.3k points
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