Left – Regular levels of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) are created by normal life processes, trapping some of the sun’s heat and preventing the planet from freezing.
Right – The rampant emission of CO2 from burning fossil fuels traps excess heat and results in an increase in the average temperature of our planet. The solution is to reduce human activities that emit heat-trapping gases.
Source: National Park Service