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Perceptual
Functional regions are defined by a central hub or node that serves as a focal point for economic, social, or political activities, while perceptual regions are defined by people's subjective feelings and attitudes towards an area based on their experiences, beliefs, or cultural influences. Functional regions are based on concrete interactions and connections, while perceptual regions are based on intangible perceptions and interpretations.
Fuctional and formal
formal
Aral sea in Kazakhstan is a formal functional region
The Grand Canyon is a Functional Region
Kauai, Hawaii is considered a formal region because it is defined by specific administrative boundaries and characteristics, such as its geographical location and political divisions.
no its neither appalachia is a perceptual region
D. A functional region is a region based on connections such as trade or communication. It is defined by a central point and the surrounding areas that are linked to that point by various functions and activities.
formal
The major functional region for Ohio is the Bluegrass region. There is also the military region which is considered to functional in Ohio.
North America