Mountain regions face environmental problems, making them unfit for living.
<u>Explanation</u>:
Mountain regions are very much prone to disasters like landslides, avalanches, wildfires and also blizzards. Hence farming in these areas is highly difficult. Obtaining water for daily consumption can also be tricky as reservoirs can hardly be built on mountains and digging wells is out of question.
The basic facilities like well constructed roads and also power for daily usage is also difficult to be built and maintained on these hilly regions. The mountain regions have less oxygen in their atmosphere and are hence not suitable for many people to live here.