What is the name of a method often used to increase the area of available agricultural land in hilly areas, as well as reduce the erosion of soil by run-off?

Terracing

Explanation:

Terracing usually refers to a type of agricultural practice that is often carried out in the hilly areas, where wide steps are being made by cutting around the slope of the mountain hills.

This method mitigates both the amount of water as well as the flow velocity of water that moves across the surface of the soil. This helps in reducing the effect of soil erosion and also improves water quality.

This agricultural practice also helps in increasing the total area for the cultivation of crops in the hilly region.

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