Methane, CO2, etc. 12. Physics Temperature http://wattsupwiththat.com/2012/01/01/a-big-picture-look-at-earths-temperature/ http://en.wikipedia.org/wiki/Temperature Variations in atmospheric and oceanic temperature can have significant impacts on Earth’s climate, including cloud cover, rainfall, Flora , Fauna , Ocean Circulation and Marine Biology . These variables can in turn affect Albedo and Transpiration . A Biogeochemical Cycle; http://en.wikipedia.org/wiki/Biogeochemical_cycling “or substance