In arid soils, water infiltration is restricted by a bottom layer of:
AHumus
BClay
CGravel
DKankar
Answer & Solution
Correct answer: D. Kankar
1. Calcium increases downwards.
2. It forms a hard layer in the lower horizon.
3. That layer is Kankar.
_Source: NCERT Class 10 Geography, Contemporary India II, Chapter 1, Resources and Development._
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