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The period of time between maximum and minimum sunspot activity, known as the Solar Cycle is about how many years in length?
Question 1:
The period of time between maximum and minimum sunspot activity, known as the Solar Cycle is about how many years in length?
A.
51 years
B.
101 years
C.
1 year
D.
11 years
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Trivial Practice Quiz science-technology - Test 158 | Englishfreetest.com
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15 questions
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