Consider the following statements regarding the definition and scope of weathering: 1. Arthur Holmes separated the actions of rainwash and wind, which are associated with erosion, from the process of weathering. 2. According to B.W. Sparks, mechanical fracturing or chemical decomposition of rocks by natural agents at the earth's surface is known as weathering. Select the correct answer using the code given below.

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?