Science
What are plants that live for three or more years?
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What is the rhythmic repetition surrounding the planetary day called?
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The obscuring from sight of one celestial body by another is also by what scientific term?
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Which Apollo mission were Edward White and Gus Grissom selected for?
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What is a return of the electron beam to the top of a television picture tube?
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What is the main form of energy produced by a laser?
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What is a process used by plants to convert light energy into chemical energy?
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