A) desert areas
B) hilly areas
C) dry areas
D) plain areas
Correct Answer: B
Solution :
Terracing is a mechanical method of soil conservation. In terracing a number of plat forms are constructed along contours or suitable graded lines across the slope (hilly region). Contour farming is useful in areas with low rainfall. Alternate furrow and ridges are prepared in the field. Ridges at the same level are known as contours.
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