Science

How many years are in a sunspot cycle?

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What does splitting a laser light into two beams through a silver mirror make?
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What type of simple machine is used on a flag and flag pole?
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What does the word "constellation" mean?
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What is a blue moon?
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What is the name for a body in orbit around the Sun?
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Which is the organelle involved with waste removal?
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The process by which plants make food is called what?
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When cool or cold air suddenly drops to the ground, it is known as a what?
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