Possible+Causes

Possible Causes of Global Warming Climatologists have studies the patterns since early 1800's


 * While carbon dioxide is the principal greenhouse gas, methane is second most important
 * Car emmissions are another one of the causes of global warming
 * burning of fossil fuels (coal, oil, natural gas) puts CO2 into the air
 * clearing of land (trees and plants remove CO2 from the air) during photosynthesis