Ключевые слова: abstract, art, background, banner, building, city, cityscape, concept, conservation, cut, day, design, earth, eco, ecology, ecosystem, energy, environment, farm, forest, friendly, globe, graphic, green, greenhouse, house, illustration, landscape, leaf, life, nature, outdoor, paper, park, plant, power, protection, recycle, save, sky, solar, sustainable, town, tree, turbine, urban, water, wind, world,