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  • An embankment, ridge, or leveled strip constructed across sloping soils on the contour, or at right angle to the slope. The terrace intercepts surface runoff so that it can soak into the soil or flow slowly to a prepared outlet, decreasing rates of soil erosion.
  • A nearly level, usually narrow, plain bordering a river, lake, or sea. Rivers sometimes are bordered by a number of terraces at different levels. There are also manmade terraces.
  • a fluvial terrace is a remnant of an earlier flood-plain isolated by down-cutting of the river, resulting in a step-like series of "flats" and scarps. Beach terraces are old ocean or lake beaches isolated by lowered water levels.

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