भारत में प्राचीन चट्टानों के विश्लेषण से प्राप्त पुराचुम्बकीय (palaeomagnetic) परिणाम यह संकेत देते हैं कि भूगर्भीय अतीत में, भारतीय भूभाग किस दिशा में आगे बढ़ा है?

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?