Answer:
over 4.5billion years ago is the answer
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:
The two main factors that affect density of ocean water are the temperature of the water and the salinity of the water. The density of ocean water continuously increases with decreasing temperature until the water freezes.
Explanation:
Can I get brainiest.