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  1. What Causes Soil Erosion? | Causes, Effects, & Facts | Britannica

    Soil erosion, like rock erosion, is caused by the movement of water, wind, and glaciers. Since soil (whether loose of compact) is less resistant to these forces, it tends to occur more rapidly than …

  2. Rocky Mountains | Location, Map, History, & Facts | Britannica

    5 days ago · Rocky Mountains, mountain range forming the cordilleran backbone of the great upland system that dominates the western North American continent.

  3. List of presidents of the United States | U.S. Presidents, Presidential ...

    As the head of the government of the United States, the president is arguably the most powerful government official in the world. The president is elected to a four-year term via an electoral …

  4. Rock | Definition, Characteristics, Formation, Cycle, Classification ...

    May 12, 2025 · Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth is composed and …

  5. Rock - Pioneers, Genres, Legends | Britannica

    Apr 17, 2025 · Rock - Pioneers, Genres, Legends: For lexicographers and legislators alike, the purpose of definition is to grasp a meaning, to hold it in place, so that people can use a word …

  6. 123Movies | History, Shutdown, & Facts | Britannica

    123Movies is a defunct movie and television show streaming website that enabled users to watch and download media for free in the 2010s.

  7. How Do Tectonic Plates Move? - Encyclopedia Britannica

    Scientists are still debating how tectonic plates move, but most of experts believe that the movement of plates is caused by the convection within the planet’s mantle.

  8. Rock - Mechanical Properties | Britannica

    May 12, 2025 · Rock - Mechanical Properties: When a stress σ (force per unit area) is applied to a material such as rock, the material experiences a change in dimension, volume, or shape. This …

  9. Rock and Roll Hall of Fame and Museum - Encyclopedia Britannica

    4 days ago · Rock and Roll Hall of Fame and Museum, museum and hall of fame in Cleveland that celebrates the history and cultural significance of rock music and honors the contributions …

  10. Roman numeral | Chart, LIX, & Facts | Britannica

    Roman numeral, any of the symbols used in a system of numerical notation based on the ancient Roman system. The symbols are I, V, X, L, C, D, and M, standing respectively for 1, 5, 10, 50, …

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