Ключевые слова: alternative, bio, bulb, car, climate, collection, concept, earth, eco, ecological, ecology, electric, energy, environment, environmental, factory, forest, friendly, global, globe, green, house, icon, illustration, leaf, light, line, natural, nature, organic, outline, planet, plant, pollution, power, recycle, recycling, renewable, set, solar, sun, sustainability, symbol, technology, thin, tree, waste, water, wind,