How is a nebkha dune formed?
Answer and explanation
Correct answer: By sand being trapped and deposited around vegetation or an obstacle
A nebkha is a small, obstacle-controlled aeolian mound. In a dry or semi-dry environment, vegetation, shrubs, or another low obstacle slows near-surface wind and traps moving sand. Continued deposition builds a mound around or immediately downwind of the obstacle. Therefore option A is correct. Sea-rock collapse, glacial valley erosion, and cave collapse are different processes and do not produce nebkha dunes.
Frequently asked questions
What is the correct answer to this question?
By sand being trapped and deposited around vegetation or an obstacle
Why is this the correct answer?
A nebkha is a small, obstacle-controlled aeolian mound. In a dry or semi-dry environment, vegetation, shrubs, or another low obstacle slows near-surface wind and traps moving sand. Continued deposition builds a mound around or immediately downwind of the obstacle. Therefore option A is correct. Sea-rock collapse, glacial valley erosion, and cave collapse are different processes and do not produce nebkha dunes.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Recording of Transactions (I & II). Topic: Covers the accounting equation.
