topsoil
geology
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land reclamation
- In land reclamation: Reclamation of eroded, infertile, and new lands
…area may be denuded of topsoil and interlaced with a dendritic, or branched, system of steep-sided watercourses called gullies. These areas are generally devoid of vegetation, and sediment eroded from them may menace lower-lying lands or water retention structures.
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