Ключевые слова: air, arrow, atmosphere, background, black, business, carbon, carbonic, chemistry, clean, climate, cloud, concept, damage, design, development, dioxide, eco, ecology, emissions, energy, environment, environmental, future, gas, global, icon, illustration, industrial, industry, innovation, isolated, line, modern, nature, outline, planet, pollution, recycle, reduce, reduction, renewable, saving, smoke, sustainable, symbol, technology,