Give reasons to justify that Himalayas act as a perfect climatic divide.

The Himalayas act as a perfect climatic divide because:

1. The great Himalayan range obstructs the bitter cold winds from Siberia from entering the Indian Subcontinent.
2. The Himalayan range intercepts the rain-bearing south-west monsoon winds, forcing them to shed their moisture, resulting in heavy rainfall in the North-East and Indo-Gangetic Plain.