Ключевые слова: apple, barrel, battery, bio, can, car, climate, collection, drop, earth, eco, ecological, ecology, electric, electricity, energy, environment, environmental, factory, garbage, global, globe, green, icon, industry, leaf, natural, nature, nuclear, outline, plant, pollution, power, recycle, recycling, renewable, seed, set, sign, sun, symbol, tap, turbine, water, web, wind,