The management of poultry by-products focuses on soil, water and air quality issues.
家禽副产品的管理主要涉及土壤、水资源和空气质量问题。
2
Paraffin is a known carcinogen, and hydrogen peroxide can harm the digestive system. Chopsticks irresponsibly disposed of can contaminate water and soilquality.
石蜡是一种已知的致癌物，而过氧化氢则对消化系统有害。随意丢弃木筷则可能污染水和土壤质量。
3
"Understanding the amount of pollutants in soil and snow is critical to maintaining the quality of alpine water sources," the scientists report.