What is the polished or dark surface formed on rocks by wind abrasion called?
Answer and explanation
Correct answer: Desert varnish
Desert varnish is a thin, dark, often slightly glossy coating that develops on exposed rock surfaces in arid environments. Wind-blown dust may abrade and polish the surface, while chemical and microbial processes help concentrate iron and manganese minerals in the coating. Thus option A is the intended answer. A delta is a river deposit, a stalagmite grows in a cave, and an arête is a sharp glacial ridge.
Frequently asked questions
What is the correct answer to this question?
Desert varnish
Why is this the correct answer?
Desert varnish is a thin, dark, often slightly glossy coating that develops on exposed rock surfaces in arid environments. Wind-blown dust may abrade and polish the surface, while chemical and microbial processes help concentrate iron and manganese minerals in the coating. Thus option A is the intended answer. A delta is a river deposit, a stalagmite grows in a cave, and an arête is a sharp glacial ridge.
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.
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