Q17
Which process is primarily responsible for weathering of rocks in desert climates?
A.
Freeze-thaw action
B.
Biological activity
C.
Chemical weathering
D.
Thermal expansion
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Thermal expansion due to extreme diurnal temperature changes causes physical weathering in deserts.This repeated heating and cooling causes rocks to fracture.Freeze-thaw is more effective in cold climates.