People have also discovered that besides in the heavy-metals adulterated garbage produced by homes and industry, one can even discover earth-worms in abandoned mines, where the amount of heavy metals is extremely high.
人們也發現，除了含有重金屬的家庭、工業垃圾，廢棄礦場附近重金屬含量極高，也仍然可以發現蚯蚓的存在。