What is conservation bench terracing (CBT). Write its main features.
Bench terraces are a soil and water conservation measure used on sloping land with relatively deep soils to retain water and control erosion. They are normally constructed by cutting and filling to produce a series of level steps or benches. This allows water to ________ _____ ____ _____ ___ ________ __________ ________ _________ ________ _____ _______.
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