For this question, our answer is following: this data is from the Technical Guidelines for Soil Pollution Risk Assessment of Construction Land in China. The website address of the guidelines is https://www.mee.gov.cn/ywgz/fgbz/bz/bzwb/trhj/201912/W020191224560850148092.pdf Will like to see ethical approval for the project/research? Ethical approval from which institution? Were Consent/assent from participants obtained? For this problem, we conducted a questionnaire survey when collecting samples before the experiment, and all the guardians of the sample providers knew and agreed to the experiment.
Line190 – why was 350d/y taken? Explain for better understanding Answer: