Science
What tool uses a magnetic needle that points north?
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What are plants that need two years to complete its life cycle?
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What does splitting a laser light into two beams through a silver mirror make?
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What spacecraft takes astronauts into space, orbits the Earth and can be flown more than once?
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Which tiny moon orbiting the asteroid Ida was discovered in 1994?
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What is a long balloon filled with helium generally called?
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In which constellation does the vernal equinox appear?
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