Ключевые слова: answer, ask, attention, background, bin, box, care, collecting, composition, concept, container, disposal, doubt, dustbin, earth, eco, ecology, environment, equally, garbage, glass, green, help, jar, junk, mark, materials, metal, nature, object, paper, planet, plastic, pollution, problem, question, recycle, reduce, refuse, reuse, rubbish, save, separate, sign, solution, sorting, symbol, think, trash, waste,