Ключевые слова: air, arrow, bin, business, care, circle, clean, concept, design, eco, ecology, element, empty, environment, environmental, garbage, global, graphic, grass, gray, grey, home, house, icon, illustration, industry, internet, isolated, life, man, nature, object, painting, paper, plastic, pollution, power, protection, recycle, recycling, reduce, reuse, shape, sign, sun, symbol, trash, waste, white, windows,