The mountain areas usually have fewer people. The mountain areas usually have fewer people.

Although your sentence's not grammatically wrong, it sounds kinda odd. I'd say something like: "The areas are usuallz inhabited by fewer people" or "Fewer people tend to live in the mountain areas."

I think the reason why this may be is because the mountain area has fewerless farmland, so it cannot support too many people living there. I think the reason why this may be is because the mountain area has less farmland, so it cannot support too many people living there.

But the mountain area is very quiet and the air is very fresh, so I think people living there can have a longevityare more likely to live long lives. But the mountain area is very quiet and the air is very fresh, so I think people living there are more likely to live long lives.

But as a person who iwas born and growingew up in the plain areas, if theyyou occasionally visit the mountain areas for a short time that isyou'd be ok, but if you stayed a little longer, they may you may soon feel bored. But as a person who was born and grew up in the plain areas, if you occasionally visit the mountain areas for a short time you'd be ok, but if you stayed a little longer you may soon feel bored.

by plain do you mean the city or something like a prairie?

Overall, transportation in the mountain area is not very developed and the mountains will block your vision. Overall, transportation in the mountain area is not very developed and the mountains will block your vision.

You can't see far away. You can't see far away.