what are the three main greenhouse gases
Report Abuse. The three main greenhouse gasses that we hear about the majority of the time are water vapor, carbon dioxide and methane. Water vapor is the gas phase of water.It is one state of water within the hydrosphere. Water vapor can be produced from the evaporation or boiling of liquid water or from the sublimation of ice.eport Abuse. The three main greenhouse gasses that we hear about the majority of the time are water vapor, carbon dioxide and methane. Water vapor is the gas phase of water.