Ключевые слова: alternative, america, american, arizona, blue, brown, california, desert, dusk, ecology, electric, electricity, energy, environment, environmental, evening, farm, field, generation, generator, green, hill, hillocks, industrial, industry, landscape, mountain, nature, nevada, power, propeller, renewable, sand, states, sunset, sustainability, sustainable, technology, turbine, united, usa, white, wind, windmill,