s, a, o, e, g, n, h, r, u are letters that make 'greenhouse gas'
re, NH, Green, en, SE, EE, green, greenhouse, as, use, house, gas, AS, US, Ouse, Re, As, Ga, Ho, Se, GA are words within 'greenhouse gas'
1 possible definitions for 'greenhouse gas'
Under this definition, greenhouse gas is a noun and has the following properties:
greenhouse emission has the same meaning as greenhouse gas
'greenhouse gas' can be a type of gas.
carbonic acid gas, sulfur hexafluoride, sulphur hexafluoride, CFC, chlorofluorocarbon, CO2, carbon dioxide, hydrofluorocarbon, HFC, perfluorocarbon, PFC are types of 'greenhouse gas'.