Earth

What is the very bottom soil horizon called?

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Red sky in morning, sailors take what?
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Where do hurricanes form?
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What are ridges of rock debris caused by glacial action called?
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What is a sudden and heavy rainfall or downpour called?
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What theory proposes that Earth's landmasses were once connected and drifted apart?
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Which of these is a warm spell of weather when ice and snow melt?
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What is amber?
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What is the current era in the geologic time scale?
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