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| peneplain |
in geology, a region that has become almost a flat plain as a result of erosion. |
| physical science |
any science, such as chemistry, physics, astronomy, or geology, that deals with inanimate matter or energy. |
| sediment |
in geology, material deposited by water, wind, or ice. [1/2 definitions] |
| tectonics |
(used with a sing. verb) the study of structural geology. [1/2 definitions] |
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