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GS Geography Physical Geography of World
Q.

Which among the followings is not the result of underground water action?
Explanation:

ANS. (A) 
Fiords were formed as a result of glacial erosion which scooped out deep trough like valleys into the rocks. When water moves underground it can drastically change the landscape, like when it creates sinkholes, stalactite and stalagmite. Sinkholes are funnel-shaped holes in the ground, and caverns are large open spaces underground.

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