11. I hope I have left some bridges unburned . 12. Any unburned areas have the potential of burning. 13. Otherwise, you may be inhaling unburned particles. 14. Unburned hydrocarbons are a source of air pollution.15. This results in unburned fuel escaping through the exhaust system and into the environment. 16. Unburned hydrocarbon emissions have never reached concentrations that could support a " skyfire ."17. Unburned hydrocarbon and carbon monoxide emissions still require treatment to meet automotive emission regulations.18. Using burned shells is logical as unburned mussel shells are hard and very durable. 19. It survives fire and resprouts, becoming more common on burned sites than unburned . 20. Plant species richness of snag forests can be much higher than in unburned forests.
