Ключевые слова: abstract, air, alternative, blue, bright, change, chimney, clean, climate, colorful, concept, development, ecology, emission, energy, environment, environmental, factory, future, futuristic, green, industrial, industry, innovation, modern, orange, pastel, pink, pipe, pollution, problem, progress, purple, renewable, sky, smoke, smokestack, solution, stack, sustainable, teal, technology, vibrant, yellow,