They give more/additional information about a certain topic of research.
They help learns to know what they may expect to see on the field
Answer:
because there might be changes in the future which could make the estimates unreliable for example war or decline in economy
Explanation:
The Mekong river is one of the primary landforms in the South-east Asian peninsula wherein it stretches 4,200 km from Southern Cambodia to the north of Myanmar. In addition, the river system has been the source of transportation as well as fisheries in settlements surrounding it. The country where the river is not its primary water system would be Vietnam.
Answer: A bc it has more chage than the rest
Explanation:
