Weathering and Erosion Crossword Puzzle

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QUESTIONS LIST: cave : when limestone is dissolved underground, you get a.., no till : leaving the previous season's stalks behind to prevent erosion, floodplain : sediment deposits here when a river overflows its banks (pg.318), oxidation : when water in the air causes chemical change, topsoil : the top layer of soil, parent rock : rock that is the source of the fragments, wind : agent of mechanical weathering, delta : deposition that occurs as a body of water slows to flow into another, mechanical : what type of weathering breaks smaller pieces of rock from larger pieces, acid rain : when pollution and rain weather together, cover crop : when farmers grow a crop between seasons to prevent erosion, crop rotation : when farmers change crops to protect nutrient depletion, plants : living agent of mechanical weathering, abrasion : grinding away of rock, differential : type of weathering in which harder rock weathers less than softer rock, chemical : what type of weathering slowly dissolves rock, deposition : when water slows and drops sediment, porosity : refers to the pore space in soil taken up by water or oxygen, humus : the most fertile section of topsoil, leaching : water dissolves and carries nutrients in topsoil to lower layers, erosion : what is the process in which wind, water, gravity transport soil?, terracing : creating a series of steps so that farming can occur on a steep hill, rounder : as a mountain ages, its peaks become (rounder/sharper), water : agent of chemical weathering, bedrock : the layer of rock beneath soil layers