Earth

Which of these pairs of elements was discovered before the 14th century?

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Where does most evaporation of water occur?
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What word means a mild or moderate temperature?
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What are rocks made from?
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What is the name for huge waves that are often caused by an underwater earthquake?
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What is another name for Mt. Kilimanjaro?
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Which is the parent rock of marble?
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What destructive event can happen when it rains for a long period of time?
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What device measures the speed or force of the wind?
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