Ключевые слова: agriculture, architecture, art, background, building, city, cityscape, concept, conservation, design, earth, eco, ecology, ecosystem, energy, environment, factory, farm, flat, forest, friendly, graphic, green, hill, home, house, illustration, landscape, mountain, natura, paper, plant, recycle, road, save, skyscraper, solar, summer, sun, template, town, tree, urban, village, water, windmill,