What steps can be taken to control soil erosion in the hilly areas?

The following steps are taken to control the soil erosion in hilly areas :
(i) Contour ploughing : which refers to ploughing along contour lines.
(ii) Terrace farming : construction of steps along the hilly areas by cutting the rock layers to reduce the flow of rivers.
(iii) Plugging of gullies to prevent gully erosion.

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