From the above facts that make China's dam haen is the main problem, and the problem was that the cargo came from China, release toxins, and sewage into the river.
From the above facts make it different opinion from that of China's dam is the main problem and the problem was that the cargo ship from China and toxic effluents into the river.
The fact that the above the dam construction of China is the main problem and the problem was the cargo ships from China release toxins and sewage into the river.