Ключевые слова: alternative, background, bio, biodiesel, biofuel, biogas, biomass, black, car, chemical, colorful, communication, concept, consumption, conversion, design, diesel, drop, electricity, energy, entertainment, ethanol, farm, filled, fuel, gas, green, hand, hose, icon, illustration, media, mobile, nature, nozzle, oil, petrol, plant, pump, refuel, renewable, save, service, set, station, symbol, tax, vegetable, yellow,