Ключевые слова: alternative, change, climate, coal, conservation, cooperation, development, earth, echo, ecosystem, efficiency, electricity, engineering, environmental, friendly, generator, global, globe, industrial, innovation, meadow, perspective, planet, pollution, power, production, project, protect, recycling, renewable, resource, rotation, saving, silhouette, sketch, solution, stream, supply, sustainability, touching, tower, turbine, up, village, warming, wind, windmill, workplace, world, writing,