Ключевые слова: abstract, background, business, button, clean, closeup, computer, concept, conservation, decoration, design, dump, earth, eco, ecology, element, energy, environment, environmental, friendly, go, graphic, green, icon, illustration, industry, internet, key, keyboard, keypad, life, light, metal, modern, nature, new, office, ornament, planet, pollution, protection, recycle, recycling, save, sign, symbol, technology, waste, white, work,