Answer:
The term "Lowlands" mainly refers to the Central Lowlands. However, in normal usage it refers to those parts of Scotland not in the Highlands (or Gàidhealtachd). The boundary is usually considered to be a line between Stonehaven and Helensburgh (on the Firth of Clyde).The Lowlands cover roughly the latter two.
The highlands provide many ecosystem services for the rest of the State, which is why it is so vitally important that we work hard to preserve the land. Ecosystem services are those intangible functions that ecosystems provide, a whole greater than the sum of its part.
The more fertile lowlands offer much better opportunities for arable and pastoral farming than the highlands - this creates jobs and helps boost the local economy.
disadvantages of lowlands are that the chances of flood is higher in plains, in plain disasters like twisters is common without mountains to prevent such disasters from happening, disasters are more in plain area than any other area, soil erosion may occur mainly in plain region, in plain population is the highest which result in more pollution.
The disadvantages of the highlands is that the mountain is a physical barrier to both communication and transport network, mountain is the cause of rain shadow effect, which may moderate dry climate after some time, mountain can erupt if it's volcano and cause lose of fauna and flora species on the place.