Science

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

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How many years are in a sunspot cycle?
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What is a space which is entirely devoid of matter called in science terms?
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Which is the organelle involved with waste removal?
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Launched in 1995, what was the SOHO spacecraft designed to study?
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What branching nerve fibers receive messages?
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What do you call someone who studies earthquakes?
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At which angle should a cannon be aimed to maximize distance?
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The definition of "process of removing salts from water using a membrane" best fits which science term?
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