Ключевые слова: advertising, alternative, bio, business, car, conceptual, conservation, development, earth, eco, ecology, ecosystem, efficiency, electricity, energy, environmental, friendly, future, generator, global, green, grow, growth, idea, industry, label, letter, life, planet, pollution, power, protection, recycling, render, renewable, resource, save, solar, supply, sustainable, technology, text, turbine, wind, windmill, word, world,