Earth
Thunderstorms form on what "lines"?
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What was TIROS I, launched on April 1, 1960?
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What instrument measures water vapor in the atmosphere?
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What is not an example of a halide?
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Which is the parent rock of marble?
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Which of these pairs of elements was discovered before the 14th century?
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What basic cloud formation resembles cauliflower?
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Which object is a remnant of a lightning bolt striking a sandy beach?
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What is the area filled with groundwater called?
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Which of these is not a metamorphic rock?
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Which of the following types of trees does not have lobed leaves?
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What is the highest mountain, considering just the contiguous United States?
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What weather-related term comes from Greek words for "high in the sky" and "knowledge"?
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Which type of irrigation is most commonly used throughout the world?
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Where is the foggiest place in the world?
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What is the name for the semiarid region that surrounds most deserts?
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What organic material is formed from decaying organisms that mix with rocks?
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What is the main cause of caves?
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What soft brown coal that has lost all of its moisture called?
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According to the International Flat Earth Society, where is the hub of the world?
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