Ключевые слова: alternative, atom, barrel, bio, car, care, clean, climate, concept, conservation, eco, ecological, ecology, effective, efficiency, electric, electricity, element, energy, environment, environmental, fuel, global, green, growth, house, icon, idea, industry, innovation, line, natural, nature, oil, panel, petrol, pictogram, plant, power, production, protection, recycle, recycling, reduction, renewable, resource, save, saving, set, sign, solar, sustainable, symbol, trash, tree, waste, water, weather, world,