Ключевые слова: background, bag, bottles, can, clean, concept, conservation, container, dirty, disposal, drink, dump, earth, ecological, empty, environment, environmental, forest, garbage, green, ground, heap, industrial, issue, junk, landfill, landscape, litter, nature, park, people, picnic, pile, plastic, pollution, problem, protection, recycle, refuse, reuse, rubbish, scrap, trash, waste, water,