Ключевые слова: background, bag, bottles, conservation, dirt, dirty, dump, earth, ecological, ecology, environment, forest, garbage, glass, green, ground, heap, illegal, industry, issue, junk, litter, material, nature, park, people, picnickers, pile, plastic, pollution, problem, recycle, recycling, rubbish, scrap, throw, throwing, trash, used, waste, woods,