| D010126 |
Ozone |
The unstable triatomic form of oxygen, O3. It is a powerful oxidant that is produced for various chemical and industrial uses. Its production is also catalyzed in the ATMOSPHERE by ULTRAVIOLET RAY irradiation of oxygen or other ozone precursors such as VOLATILE ORGANIC COMPOUNDS and NITROGEN OXIDES. About 90% of the ozone in the atmosphere exists in the stratosphere (STRATOSPHERIC OZONE). |
Ground Level Ozone,Low Level Ozone,Tropospheric Ozone,Level Ozone, Ground,Level Ozone, Low,Ozone, Ground Level,Ozone, Low Level,Ozone, Tropospheric |
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| D049674 |
History, 21st Century |
Time period from 2001 through 2100 of the common era. |
21st Century History,21st Cent. History (Medicine),21st Cent. History of Medicine,21st Cent. Medicine,Historical Events, 21st Century,History of Medicine, 21st Cent.,History, Twenty-first Century,Medical History, 21st Cent.,Medicine, 21st Cent.,21st Cent. Histories (Medicine),21st Cent. Medicines,21st Century Histories,Cent. Histories, 21st (Medicine),Cent. History, 21st (Medicine),Cent. Medicine, 21st,Cent. Medicines, 21st,Century Histories, 21st,Century Histories, Twenty-first,Century History, 21st,Century History, Twenty-first,Histories, 21st Cent. (Medicine),Histories, 21st Century,Histories, Twenty-first Century,History, 21st Cent. (Medicine),History, Twenty first Century,Medicines, 21st Cent.,Twenty-first Century Histories,Twenty-first Century History |
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