Answer: Intro- China's water pollution is a result of industrial wastewater discharges, untreated domestic sewage and nonpoint source pollution mainly from agriculture.As China's surface waters are increasingly polluted, not surprisingly its groundwater supplies have been increasingly exploited, particularly in the North.
Explanation: Hope u like the intro and to me about what ur teacher is telling you is that to not put ur opinon(sorry if that sounds rude) in it like make it sound like ur a machin thats writing it if that makes sense sorry im a little bit bad at explaining things
c it shows how important the grandmother is to the granddaughter
