अंतर्जात बलों के संबंध में निम्नलिखित में से कौन-से कथन सही हैं? (a) ये पृथ्वी के भीतर उत्पन्न होते हैं। (b) इनमें ज्वालामुखी और पटल विरूपण शामिल हैं। (c) ये उच्चावच लक्षणों को कम करते हैं। (d) ये प्राथमिक भू-आकृतियों का निर्माण करते हैं।

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?