Fact 1: Clouds are formed by water vapor rising into colder regions of the atmosphere and condensing. Fact 2: Water is made up of H2O molecules. Given the two facts above, what vapor forms clouds by rising into the atmosphere condensing?

Pick your answer from: A. rain; B. lightning; C. greenhouse gas; D. H20; E. SO2; F. pollution; G. h2o; H. Dew;
The answer is:
G.