1. They are the only major mercury emissions source that is thoroughly unregulated, 2. As a major difference, the numerator has a new contribution the spontaneous-emission source 3. In Phase II, emission sources drew down their banked allowances. 4. _Eliminating government subsidies that make coal or other high-emissions sources comparatively cheap, boosting consumption. 5. Many of the emission sources are associated with H II regions of star formation. 6. _Eliminating government subsidies that make coal or other high-emission sources comparatively cheap, boosting consumption. 7. _Eliminating government subsidies that make coal or other high-emission sources comparatively cheap, thereby boosting consumption. 8. Buildup of photon-assisted polarization ( ? correlation ) that is initiated by the spontaneous-emission source . 9. The pollutants drift over state borders, causing problems hundreds of miles downwind of the emission sources . 10. The primary component is an X-ray emission source .