greenhouse gas
Greenhouse gases are atmospheric gases that let solar radiation reach the earth’s surface but absorbs the heat radiating from it. Greenhouse gases include water vapour, carbon dioxide, methane, tropospheric ozone, dinitrogen oxide and F-gases, or fluorinated greenhouse gases. These gases cause the greenhouse effect that keeps the planet warm. The increase in the amount of manmade greenhouse gases leads to the intensifying of the greenhouse effect, also known as global warming.