Science
What tool uses a magnetic needle that points north?
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Which Apollo mission was launched on December 21, 1968, and spent Christmas in lunar orbit?
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Which characteristics do organisms use to help them survive in their environment?
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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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Which of these was one of the original universal elements?
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Pressure exerted by the atmosphere at a given point is known as what?
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Deep trenches such as the Grand Canyon were formed by what process?
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Where is the observatory where Percival Lowell first theorized the existence of Pluto?
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What two animals are found on the Australian Coat of Arms?
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