Greenhouse gases emitted

{
  "id": "MLC-T-ENV-012591",
  "term": "Greenhouse gases emitted",
  "field": "Environment",
  "term_source": "Greenhouse Gases Emitted",
  "definition": "Vehicles create greenhouse gases as a result of fuel combustion. Greenhouse gases trap heat in the atmosphere, thereby creating a greenhouse effect. Some greenhouse gases occur naturally and are emitted in the atmosphere through natural processes and human activities. Other greenhouse gases are created only through human activities. Scientists are certain that human activities are changing the composition of the atmosphere and that increasing the concentration of greenhouse gases will eventually change the planet's climate. Greenhouse gases emitted from vehicles include carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) and relatively small amounts of hydroflurocarbons (HFCs) and black carbon. The Green Vehicle Guide currently accounts for CO2, CH4 and N2O. The value shown gives tons of greenhouse gases emitted by the vehicle if it were driven 15,000 miles per year. Tons are expressed as CO2-equivalent emissions factoring in the global warming potential for each gas.",
  "subject": "Sustainability and green living",
  "references": [
    "Green Vehicle Guide Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/greenhouse-gases-emitted/"
}