Mobile transportation, like: private cars, jeepneys and buses use energy and burn petroleum. During the combustion process, these mobile transports exhaust fumes that contain nitrous oxides, carbon dioxide and other particulates that pollutes the air and contributes to global warming.
As an additional information, China is considered as the country to produce most fossil fuel CO2 emission in 2015, followed by the United States.
The greater the energy, the larger the frequency and the shorter the wavelength. Given the relationship between wavelength and frequency; the higher the frequency, the shorter the wavelength it follows that short wavelength are more energetic than long wavelength.