Ключевые слова: abstract, battery, bicycle, bio, bulb, car, clean, collection, concept, conservation, earth, eco, ecological, ecology, electric, element, energy, environment, environmental, global, globe, green, hand, handshake, house, icon, icon set, leaf, light, line, modern, natural, nature, organic, plug, pollution, pot, power, recycle, recycling, renewable, set, sign, symbol, thin, tower, tree, web, wheat,