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chapter 7 science
AB
chemical weatheringdissolve or alter rock
climatepattern of weather
contour farmingplanting on slopes
horisonlayers of soil
humusdecayed organic material
ice wedgingwater freezing in cracks
leachingremoving minerals
litterleaves,twigs
mechanical weatheringbreaking rocks apart
no-till farmingplanting without plowing
oxidationexposes to oxygen & water
soilmixture, rock, humus,etc.
soil profileall the horizons of a soil
terracingplanting in steps
weatheringbreaks down rock


kathy lewis

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