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15 questions from this quiz
Five
Climate
Deep, fertile soils
Freeze-thaw cycles
Nutrients washing from A to B horizon
Dissolved salts build up, toxic to plants
Original bedrock soil develops from
Acidic soils with low pH
Calcium-rich, dark-coloured soils
Glacial deposits
Gley soils
Erosion faster than formation
By binding soil particles together
Breaking down organic matter into humus
Less than 10,000 years old
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