Ключевые слова: activist, bag, black, bottle, care, clean, coast, concept, damage, dirt, dirty, disaster, disposal, dump, earth, eco, ecological, ecology, environment, environmental, garbage, green, hand, holding, human, junk, lake, landscape, litter, nature, object, old, optimistic, outdoor, park, people, picking, pollution, problem, recycle, recycling, refuse, river, rubber, rubbish, save, trash, volunteer, waste, water,