Mekong River,Thailand The Mekong River runs through many countries like China, Burma, Thailand, Laos, Cambodia, and Vietnam. Many people rely on this river for multiple things. Their main food source comes from the river. Fish are caught, plants are grown, and transported to other locations to be sold. The river also is a way of travel. Around the river is a jungle like terrain. The soil is vary fertile because of the river so it is relatively easy for plant life to grow. This river shows how life is dependent on water. This is one of many ways that shows the symbiotic relationship between water and humans.