解析 答案:Composting is a process that involves the controlled decomposition of organic waste into a nutrient-rich soil amendment, while landfilling is a method of waste disposal where waste is buried in the ground, which can lead to environmental pollution....
Bob Otto
There's just one slight difficulty: your toilet doesn't actually dispose of sewage: it just washes the problem down a long smelly pipe so it ends up somewhere else—and it uses lots of water in the process. Even in the world's richest and most sophisticated countries, sewage disposal is...