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Most physical weathering is caused by thermal expansion and:
AChemical decay
BPlant roots
CCarbonation
DPressure release
Answer & Solution
Correct answer: D. Pressure release
1. Repeated expansion and contraction fatigue rocks.
2. Pressure release is the other main cause.
3. The processes are small and slow.
_Source: NCERT Class 11 Fundamentals of Physical Geography, Chapter 6, Geomorphic Processes._
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