Answer:
The positive impact of living near the plain areas are-
(1) Agriculture can be carried out.
(2) Mode of transportation is convenient.
The negative impacts of living near the plain areas-
(1) Over-population
The positive impact of living near the river areas are-
(1) The land area near river are very fertile as it is rich in nutrients.
(2) Fresh water is obtained from the river and also fishing can be done in these places.
The negative impact of living near the river areas are-
(1) Flood can occur anytime, that can cause damages to lives and properties.