Ключевые слова: alternative, background, brown, concept, concepts, conceptual, conservation, construction, cut, cutout, design, develop, development, eco, ecological, ecology, economics, economy, emission, energy, engineering, environment, environmental, factory, fresh, industrial, industry, investment, new, object, paper, plant, project, protection, protectionl, recycle, recycling, renewable, responsibility, reuse, section, shape, sign, structure, sustainability, sustainable, symbol, wallpaper, white,