Ключевые слова: bag, bags, black, bottle, clean, concept, conservation, contamination, dirty, discard, disposal, dump, dumping, ecological, ecology, environment, environmental, fill, food, footpath, garbage, hazardous, industrial, land, landfill, litter, machine, management, many, methane, ocean, paper, people, pile, plastic, pollution, recycle, recycling, refuse, rejected, rubbish, sea, site, trash, travel, treatment, truck, unclean, urban, waste,