Ключевые слова: background, bottle caps, clean, color, colorful, earth, eco, ecology, environment, environmental, feet, friendly, global, go, green, group, industry, junk, leg, manufacture, many, mix, mosaic, multicolor, object, planet, plastic, plastic bottle caps, plastic rubbish, pollution, polyethylene, polymer, processing, pvc, rainbow, recyclable, recycle, recycled, recycling, refuse, reuse, reusing, separate, stopper, use, used, utilize, walk,