Ключевые слова: background, bag, bin, black, bottle, care, city, collecting, communicating, concept, cooperation, disposal, ecology, ecosystem, environment, food, garbage, gloves, grass, green, hand, holding, horizontal, human, litter, male, man, nature, object, old, one person, optimistic, outdoors, park, people, pick, picking, plastic, protection, recycling, responsibility, rubber, rubbish, teamwork, throwing, trash, up, volunteer, waste, working,