Earth

What are mounds of sand that have been windblown called?

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What is the theory that describes how the continents got where they are today?
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Which material do fossils make more attractive to an architect?
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Which volcano in Iceland was once thought to be a gateway to the underworld?
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When does magma become lava?
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Which of these habitats describes the North Pole?
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In weather, "mean" means what?
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Which is another name for a pudding stone?
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Where are the Horse Latitudes located?
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