Heat gets trapped inside the blanket of greenhouse gases and the Earth becomes too warm. Greenhouse gases like carbon dioxide (CO2), nitrous oxide (N2O), and methane The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat. This process makes Earth much warmer than it would be without an atmosphere. The greenhouse effect is one of the things that makes Earth a comfortable place to live.
(CH4), trap heat in the atmosphere. With higher-than-natural concentrations, they lead to unnatural warming.