अभिकथन (A): डोलाइन (Dolines) और घोलरंध्र (swallow holes) आमतौर पर चूना पत्थर वाले क्षेत्रों में पाए जाते हैं। कारण (R): ये आकृतियाँ मुख्य रूप से घुलनशील कार्बोनेट चट्टानों पर काम करने वाली रासायनिक विलेयन और कार्बोनेशन प्रक्रियाओं के कारण बनती हैं। सही विकल्प का चयन कीजिए:

The crescent-shaped sand dunes found in Sam, Jaisalmer are scientifically known as:

With reference to fjords, consider the following statements: I. They are deep, narrow inlets carved mainly by glaciers and later occupied by seawater. II. The shallow sill near their mouth is generally associated with glacial deposition rather than with tectonic uplift alone. III. They are chiefly associated with high-latitude or formerly glaciated coasts, rather than with humid tropical landscapes. How many of the statements given above are correct?