Differences between the Western and the Eastern Himalayas:
Western Himalayas
1. The Western Himalayas lie to the west of 86°W longitude, between the Indus and the Kali rivers.
2. It rises gradually in a series of ranges.
3. The average rainfall is less than 100 cm.
4. Vegetation is mainly alpine and coniferous.
Eastern Himalayas
1. The Eastern Himalayas lie to the east of 88°E longitude, between Tista and Brahma putra rivers.
2. It rises abruptly from the plains of Bihar and West Bengal.
3. The average rainfall is more than 200 cm.
4. Vegetation is mainly dense evergreen.
