Water in the atmosphers is in its gas form and is called water vapor. Where does most of the water vapor in the atmosphere evaporate from?

Water vapor can be produced from the evaporation or boiling of liquid water or from the sublimation of ice. Water vapor is transparent, like most constituents of the atmosphere. Under typical atmospheric conditions, water vapor is continuously generated by evaporation and removed by condensation.

c. 4.54 x 10–12 j happens to be correct