Ключевые слова: atmosphere, background, building, business, chart, cloud, co2, color, colorful, concept, contour, diagram, dioxide, dollar, drilling, ecology, emission, energy, environment, exhaust, factory, flat, fuel, gas, gasoline, graph, graphic, icon, illustration, industrial, industry, infographic, isolated, line, linear, outline, petroleum, pipe, power, pump, report, rig, set, sign, silhouette, symbol, technology,