It has to do with green.
-1. 'Jealousy', metaphorically: 2 words
-2.'Breakfast' for Theodor Geisel: 4
-3.Pittsburgh Steeler 'quarterback sacker': 3
4.Small piece of 'prime' real estate; 'quiet please!': 2
-5.Some say these make the world go round: 1 slang U.S.
-6.'Kermit's Lament': 5
-7.International Organization of Environmental Activists: 1
-8.His 'interest' is in interest......rates, that is: 2
-9.Mid 18th century 'band of pre-revolutionary patriots' in what was to become the United States of America: 3
-10.Term used to describe the 'increase of average global temperature': 2