Linked from
The 42 pages that link to Water vapor, each with the reason it gives.
Atmospheric windowRelated: Its strong, numerous absorption bands interrupt infrared transmission.
John TyndallRelated: Tyndall identified it as a strong absorber of heat radiation.
DeliquescenceRelated: It supplies the molecules that a deliquescent solid absorbs.
ThunderstormRelated: Moist air supplies condensate and latent heat for cloud and storm development.
DesiccantRelated: This is the moisture desiccants capture from their surroundings.
Lake-effect snowRelated: Evaporation from the lake supplies vapor that can condense and freeze.
Hydrogen fuelRelated: Water is the main product when hydrogen reacts completely with oxygen.
Cumulonimbus cloudRelated: Rising air supplies the moisture that condenses into cloud droplets.
Winter stormRelated: Moisture supplies the precipitation that a winter storm can deliver.
FrostRelated: It supplies the molecules that become frost crystals.
PopcornRelated: Steam generated inside the kernel builds the pressure needed for popping.