The correct answer to this open question is the following.
The three ecological regions of Nepal are the following: the Plains, teh Mountains, and the Hills. The social and economic aspects of these regions are the following.
Nepal is a multi-ethnic place and many languages are spoken in the country. 18% of the people are Chhetri, 14% are Brahmins, and 7% Magar. 80% of the population speak Indo-Aryan languages, while the rest 20% speak TibetanBirmese language. However, the official language of Nepal is called "Nepali."
Agriculture is the most important economic activity in Nepal, followed by the service sector, tourism, and the manufacturing industry.
D. its release is stimulated by the pituitary gland.
