Question

why are plains thickly populated compared to hilly areas

Answer 1

soils are very fertile.

2) it provides a good place for agriculture.

3) the nearby rivers provide irrigation for the crops.

4) transportantion system is convenient.

5) communication system is very easy.

6) it provides a good place for living.

Answer 2

Plains are highly populated compared to hilly areas because of few reasons the reasons are as follows:-
1- Hilly areas have a chance of landslide.
2-Hilly areas don't have proper facility like transport,medical etc.
3-In hilly areas chance of earthquake is also more.
4-Hilly areas are on greater height because of which the people who are suffering from problems of taking oxygen can't go there. In other words less O2 supply.