Q44
What is the main reason for dune migration in deserts?
A.
Chemical weathering
B.
Wind transport of sand grains
AnswerC.
Rainfall erosion
D.
Glacial movement
Answer: Option B
Solution
Answer: Option B
Solution:
Dune migration is primarily due to wind transporting sand over the crest and depositing it on the leeward side.This process moves dunes slowly in the direction of the wind.