Look at the answer of "Mother River Self-Report"

1, please read the full text and briefly describe the main causes of the Yellow River pollution.

Throughout the paper, the main cause of the Yellow River pollution is the sewage discharge on both sides. (Other reasons include drought and poor supervision. )

2. What explanation methods are used in this article? Try to find an example and talk about its function.

This paper adopts the methods of analogy, chart and quotation to elaborate.

For example, the amount of dirty water discharged into my arms is increasing day by day, doubling in 10. Now there are 4.2 billion tons a year, which is equivalent to half of my water supply this year. It used to be called "a bowl of water, half a bowl of mud", but now it has become "a bowl of water, half a bowl of mud", which cannot be digested at all.

The explanation method is column number.

Its function is to accurately and objectively reflect the facts, which is very convincing. It also reflects the accuracy of the explanatory text.

I hope I can help you!