Ключевые слова: background, biogas, black, blaze, blue, burner, business, butane, combustion, contrast, copy space, crisis, dark, economic, energy, ethane, fire, flame, flammable, flare, fossil, fossil fuel, fuel, gas, gasoline, generation, glowing, heat, hot, kitchen, light, methane, natural, natural gas, pollution, power, propane, resource, saturated, stove, studio, technology, temperature, warming,