1. The Sadiya-Dhubri stretch of the Brahmaputra River has been declared National Waterway 2 by the National Waterways Act 1988.

2. The waterway extends from Dhubri to Sadiya for a distance of 891 km.

1. The hot, dry, painful winds blowing between Delhi and Patna are called Loo.

2. Flows in the plains of northern India and Pakistan in the months of May and June.

3. Heat waves can reach temperatures of up to 45 degrees Celsius, and can last for several hours.

A sea cliff refers to a steep rocky coast that rises almost vertically above the seawater. Sea cliffs are typically formed by the erosive action of waves over a long period of time, causing the coastline to retreat inland and leaving behind a vertical or near-vertical rock face. These formations are often found in areas with rugged coastlines and are a result of various geological processes and erosion by the sea. Sea cliffs can be impressive natural landmarks and are often admired for their dramatic and picturesque views.