Ключевые слова: background, bag, bottle, broken, concept, conservation, container, denied, dirty, disposal, dump, ecological, ecology, environment, environmental, equipment, garbage, green, heap, industrial, industry, iron, isolated, junk, junkyard, landfill, litter, metal, old, plastic, pollution, recycle, recycling, reuse, reusing, rubbish, scrap, stack, steel, toxic, trash, waste, water, white, yard,