Specialty Medical Coding Certification. 1  Hematology and Oncology â CHONCâ¢. 2  Internal Medicine â CIMCâ¢. 3  Interventional Radiology and Cardiovascular â CIRCCÂ®. 4  Obstetrics Gynecology â COBGCâ¢. 5  Ophthalmology â COPCâ¢. 6  Orthopaedic Surgery â COSCâ¢. 7  Otolaryngology â CENTCâ¢. 8  Pediatrics â CPEDCâ¢. FREE Practice Exam & Study Guide through Aug 31st.
Oxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table and is a highly reactive nonmetallic element and oxidizing agent that readily forms compounds (notably oxides) with most elements. Photosynthesis releases oxygen, and respiration consumes oxygen.
Each ozone molecule contains three atoms of oxygen andis denoted chemically as O 3. Ozone is found primarily in two regions of the atmosphere. About 10% of atmosphericozone is in the troposphere, the region closest to Earth (from the surface to about 10-16 kilometers (6-10 miles)).ach ozone molecule contains three atoms of oxygen andis denoted chemically as O 3. Ozone is found primarily in two regions of the atmosphere. About 10% of atmosphericozone is in the troposphere, the region closest to Earth (from the surface to about 10-16 kilometers (6-10 miles)).