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Heating of air in contact with the warm ground, layer by layer, is called:

AAdvection
BRadiation
CConduction
DConvection
Answer & Solution
Correct answer: C. Conduction
1. Energy flows from warmer to cooler body in contact. 2. This is conduction. 3. It heats the lower layers of the atmosphere. _Source: NCERT Class 11 Fundamentals of Physical Geography, Chapter 9, Solar Radiation, Heat Balance and Temperature._
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