Terracing of hillside is most often used in B. agriculture.
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Answer:
The oceanic crust is forced under the continental crust and into the mantle. Crompression causes mountains to form on the continental crust. Material in the mantle melts as volatiles seep out of the oceanic crust. The molten material rises to the surface, forming a continental volcanic arc.
Explanation:
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Schist has the highest metamorphic grade.