The reason for Gujarat as main salt producer is that less rain and relative humidity is best for the evaporation of the sea water.

1. The troposphere is the layer closest to the Earth's surface in which all seasonal changes occur.

2. This circulation is responsible for weather phenomena, such as clouds, rain, snowfall, and storms.

1. The area of Ganga Brahmaputra basin is situated in 10°N to 30°N latitude.

2. The Ganga Brahmaputra Basin is located in the subtropical regions of the Indian subcontinent.

3. Ganga Brahmaputra Basin is a basin formed by the Ganges and Brahmaputra rivers and their tributaries.

4. Following are the characteristics of Ganga-Brahmaputra basin.

- This basin has rich plains, Himalayas and Sundarban delta.

- Area: 1,999,000 square kilometers

- Population: over 1.5 billion

- Main rivers: Ganga, Brahmaputra, Yamuna, Godavari, Mahanadi, and tributaries of Brahmaputra.

- Main crops: Paddy, wheat, maize, and pulses