Give reasons as to why parts of Rajasthan, Gujarat and the leeward side of the Western Ghats are drought-prone.

Parts of Rajasthan, Gujarat and the leeward side of the Western Ghats are drought-prone due to the following reasons:

1. The Arabian sea branch of the monsoon enters the Indian subcontinent from the western coast and brings heavy rainfall on windward side of Western Ghats. The leeward side gets very little rainfall as it falls in rain shadow area.
2. The Bay of Bengal branch of the monsoon gradually sheds its moisture as it moves from east to west. By the time it reaches Rajasthan and Gujarat which are located in the northwestern part of the country, it doesn't have much moisture left to cause adequate rainfall.
3. The Aravallis do not obstruct the Monsoon winds due to their parallel alignment to the winds and low heights of Aravallis.