Crossword clues for the word: GREENHOUSEGASES The word GREENHOUSEGASES has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for GREENHOUSEGASES Showing 1 to 8 of 8 results Clue(s) """Hot"" political topic" "Big topic in ""An Inconvenient Truth""" "CO2 and methane, to a ecoscientist" Atmospheric worries Carbon dioxide and methane Cause of global warming Methane and ozone They leave carbon footprints