Greenhouse Gas
Carbon dioxide (CO2)
Methane (CH)
Nitrous oxide (NO₂)
Fluorinated gases (HFCs,
PFCs, and SF)
http:/www.epa.gov/climatechangep
Amount of Carbon Dioxide (CO2)
21 times greater
310 times greater
140 to 23,900 times greater
missions/gasesch4.htm
http://www.epa.gov/climatechangeighgemissions/gases/n20.htm
http://www.epa.gov/climatechange
emissions/gases gases.htm
increasing concentrations of these gases leads to increases in global atmospheric temperatures. Methane, nitrous oxide, and fluorinated gases all
trap more heat than the same amount of carbon dioxide does. Why should people still focus efforts on limiting carbon dioxide emissions?
O The other gases circulate more readily through the global atmosphere
O Humans generate significantly more CO₂ than they do the other gases
Atmospheric reactions convert large quantities of the other gases into CO₂
O CO₂ is responsible for poisoning a large number of cattle