Science
What is a return of the electron beam to the top of a television picture tube?
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Which of these is defined as "part of the electromagnetic spectrum that contains visible light"?
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What is the name for a body in orbit around the Sun?
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What is the part of a plant that serves primarily as the plant's food-making organ?
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Ian Shelton, who discovered Supernova 1987A, while observing in Chile, was working for what university?
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Deep trenches such as the Grand Canyon were formed by what process?
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