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GS Geography Physical Geography of World
Q.

The soil which originate under tall-grass prairie vegetation is called:
Explanation:

ANS. (C) 
Chernozems or black earth variety of soil is rich in organic matter in the form of humus. It is generally a modified type of loess. True chernozems is black in color, but there are various grades, shading off into gravy and chestnut-brown soils. It forms in areas that have cold winters, hot summers, and rapid evaporation of precipitation; generally, only tall grass is found native on chernozems.

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