Ключевые слова: background, bad, bag, chao, conservation, contamination, copy, damage, danger, destruction, difficulty, dirt, disaster, discard, ecosystem, environmental, global, green, harm, heap, infection, issue, junk, land, litter, lot, many, mess, outdoor, person, pile, plastic, poison, problem, refuse, rubbish, social, space, sweeping, trouble, urban, waste, wood, worry,