Why does a mushroom rock develop a narrow base?
Answer and explanation
Correct answer: Because wind-blown sand causes greater abrasion near the lower part.
The governing concept is wind abrasion and the vertical distribution of sand load. Sand grains carried by wind are concentrated close to the ground, where they repeatedly strike and scour the lower part of an exposed rock. The base is therefore worn more rapidly and becomes narrow, producing a mushroom shape. Option B is correct; the other choices invoke glacial, marine, or karst processes that do not explain this form.
Frequently asked questions
What is the correct answer to this question?
Because wind-blown sand causes greater abrasion near the lower part.
Why is this the correct answer?
The governing concept is wind abrasion and the vertical distribution of sand load. Sand grains carried by wind are concentrated close to the ground, where they repeatedly strike and scour the lower part of an exposed rock. The base is therefore worn more rapidly and becomes narrow, producing a mushroom shape. Option B is correct; the other choices invoke glacial, marine, or karst processes that do not explain this form.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Computerized Accounting & Database System. Topic: Introduction to Computers in Accounting.
