Q.

Ploughing along the contour lines is called [[1]].


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Detailed Solution

Ploughing along contour lines is called contour ploughing. Contours are imaginary lines on a map connecting places with the same elevation. The ploughing of lands along the contour lines and cultivating in these regions is a practice followed by farmers on slopes to reduce soil erosion. The ploughing of contour lines creates a break in the water flow as it moves down the slopes. It results in the deposition of eroded sediments along these slopes, reducing the effects of soil erosion. It also allows the water to seep into the soil. Thus the rainwater increases the moisture content in the soil, aiding cultivation rather than taking away the topsoil. Meghalaya and Assam practice this type of cultivation.
 
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