Earth

What is sedimentary rock composed primarily of sand-sized grains?

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Al Gore made a film about what climate issue?
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What are large volcanoes that rise from the sea floor called?
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What is the mountain range that separates Spain from France?
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What is the sediment left behind after a glacier moves through an area called?
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Which of these is not a group of modern desert?
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What permanent snowcap is within sight of the equator?
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Which of these is another name for dirt?
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What type of glacier is Greenland or Antarctica called?
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