Ключевые слова: battery, bio, bulb, car, collection, concept, conservation, design, earth, eco, ecological, ecology, electric, electricity, element, energy, environment, environmental, factory, fuel, garbage, global, globe, green, house, icon, illustration, industry, leaf, light, natural, nature, planet, plant, pollution, power, recycle, recycling, renewable, set, sign, solar, sun, symbol, tree, water, web, wind, world,