Earth

What is a sudden collapse and downward motion of ice and rocks down a mountainside?

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How much of an iceberg appears above the water line?
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What country forms a 2000-mile archipelago along the east coast of Asia?
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Which of these is another name for dirt?
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What can help farmers control erosion in their fields?
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What is the highest mountain, considering just the contiguous United States?
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What is a reason for the Earth's seasons?
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What type of boundary is made by the Mariana Trench?
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A weather proverb says: "Clear moon," followed by what?
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