Science

What scientist discovered that sunspots occur in an eleven-year cycle?

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Approximately how many miles of wire are there in a 737?
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What is the reproductive organ of most seed-bearing plants?
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How many moons does Earth have?
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In what year did Albert Einstein win the Nobel Prize for physics?
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What is the opening of a lens, which controls the amount of light?
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Which planet is named for the Roman goddess of love?
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Which state of matter is an ice cube?
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Which parts of a flower are often brightly-colored and have many different shapes?
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